IP subnet calculator
Type an address with its prefix or mask to see the network, its usable range and masks. Split it into smaller subnets, or look up any prefix in the reference tables.
Prefix/4
Addresses2^124
/64 networks2^60
- Network
3000::/4- First address
3000::- Last address
3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff- Addresses
- 21,267,647,932,558,653,966,460,912,964,485,513,216 (2^124)
- /64 networks (LANs)
- 1,152,921,504,606,846,976 (2^60)
- Full form
3000:0000:0000:0000:0000:0000:0000:0000- Type
- Global unicast 2000::/3
Public internet addresses - Reverse DNS zone
3.ip6.arpa
Split into smaller subnets
3000::/4 makes 256 subnets of /12.
| # | Subnet | Last address |
|---|---|---|
| 1 | 3000::/12 | 300f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 2 | 3010::/12 | 301f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 3 | 3020::/12 | 302f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 4 | 3030::/12 | 303f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 5 | 3040::/12 | 304f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 6 | 3050::/12 | 305f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 7 | 3060::/12 | 306f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 8 | 3070::/12 | 307f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 9 | 3080::/12 | 308f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 10 | 3090::/12 | 309f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 11 | 30a0::/12 | 30af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 12 | 30b0::/12 | 30bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 13 | 30c0::/12 | 30cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 14 | 30d0::/12 | 30df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 15 | 30e0::/12 | 30ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 16 | 30f0::/12 | 30ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 17 | 3100::/12 | 310f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 18 | 3110::/12 | 311f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 19 | 3120::/12 | 312f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 20 | 3130::/12 | 313f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 21 | 3140::/12 | 314f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 22 | 3150::/12 | 315f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 23 | 3160::/12 | 316f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 24 | 3170::/12 | 317f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 25 | 3180::/12 | 318f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 26 | 3190::/12 | 319f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 27 | 31a0::/12 | 31af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 28 | 31b0::/12 | 31bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 29 | 31c0::/12 | 31cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 30 | 31d0::/12 | 31df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 31 | 31e0::/12 | 31ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 32 | 31f0::/12 | 31ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 33 | 3200::/12 | 320f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 34 | 3210::/12 | 321f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 35 | 3220::/12 | 322f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 36 | 3230::/12 | 323f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 37 | 3240::/12 | 324f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 38 | 3250::/12 | 325f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 39 | 3260::/12 | 326f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 40 | 3270::/12 | 327f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 41 | 3280::/12 | 328f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 42 | 3290::/12 | 329f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 43 | 32a0::/12 | 32af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 44 | 32b0::/12 | 32bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 45 | 32c0::/12 | 32cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 46 | 32d0::/12 | 32df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 47 | 32e0::/12 | 32ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 48 | 32f0::/12 | 32ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 49 | 3300::/12 | 330f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 50 | 3310::/12 | 331f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 51 | 3320::/12 | 332f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 52 | 3330::/12 | 333f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 53 | 3340::/12 | 334f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 54 | 3350::/12 | 335f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 55 | 3360::/12 | 336f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 56 | 3370::/12 | 337f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 57 | 3380::/12 | 338f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 58 | 3390::/12 | 339f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 59 | 33a0::/12 | 33af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 60 | 33b0::/12 | 33bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 61 | 33c0::/12 | 33cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 62 | 33d0::/12 | 33df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 63 | 33e0::/12 | 33ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 64 | 33f0::/12 | 33ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 65 | 3400::/12 | 340f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 66 | 3410::/12 | 341f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 67 | 3420::/12 | 342f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 68 | 3430::/12 | 343f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 69 | 3440::/12 | 344f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 70 | 3450::/12 | 345f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 71 | 3460::/12 | 346f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 72 | 3470::/12 | 347f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 73 | 3480::/12 | 348f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 74 | 3490::/12 | 349f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 75 | 34a0::/12 | 34af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 76 | 34b0::/12 | 34bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 77 | 34c0::/12 | 34cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 78 | 34d0::/12 | 34df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 79 | 34e0::/12 | 34ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 80 | 34f0::/12 | 34ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 81 | 3500::/12 | 350f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 82 | 3510::/12 | 351f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 83 | 3520::/12 | 352f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 84 | 3530::/12 | 353f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 85 | 3540::/12 | 354f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 86 | 3550::/12 | 355f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 87 | 3560::/12 | 356f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 88 | 3570::/12 | 357f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 89 | 3580::/12 | 358f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 90 | 3590::/12 | 359f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 91 | 35a0::/12 | 35af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 92 | 35b0::/12 | 35bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 93 | 35c0::/12 | 35cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 94 | 35d0::/12 | 35df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 95 | 35e0::/12 | 35ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 96 | 35f0::/12 | 35ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 97 | 3600::/12 | 360f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 98 | 3610::/12 | 361f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 99 | 3620::/12 | 362f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 100 | 3630::/12 | 363f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 101 | 3640::/12 | 364f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 102 | 3650::/12 | 365f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 103 | 3660::/12 | 366f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 104 | 3670::/12 | 367f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 105 | 3680::/12 | 368f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 106 | 3690::/12 | 369f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 107 | 36a0::/12 | 36af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 108 | 36b0::/12 | 36bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 109 | 36c0::/12 | 36cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 110 | 36d0::/12 | 36df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 111 | 36e0::/12 | 36ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 112 | 36f0::/12 | 36ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 113 | 3700::/12 | 370f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 114 | 3710::/12 | 371f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 115 | 3720::/12 | 372f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 116 | 3730::/12 | 373f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 117 | 3740::/12 | 374f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 118 | 3750::/12 | 375f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 119 | 3760::/12 | 376f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 120 | 3770::/12 | 377f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 121 | 3780::/12 | 378f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 122 | 3790::/12 | 379f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 123 | 37a0::/12 | 37af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 124 | 37b0::/12 | 37bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 125 | 37c0::/12 | 37cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 126 | 37d0::/12 | 37df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 127 | 37e0::/12 | 37ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 128 | 37f0::/12 | 37ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 129 | 3800::/12 | 380f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 130 | 3810::/12 | 381f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 131 | 3820::/12 | 382f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 132 | 3830::/12 | 383f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 133 | 3840::/12 | 384f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 134 | 3850::/12 | 385f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 135 | 3860::/12 | 386f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 136 | 3870::/12 | 387f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 137 | 3880::/12 | 388f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 138 | 3890::/12 | 389f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 139 | 38a0::/12 | 38af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 140 | 38b0::/12 | 38bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 141 | 38c0::/12 | 38cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 142 | 38d0::/12 | 38df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 143 | 38e0::/12 | 38ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 144 | 38f0::/12 | 38ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 145 | 3900::/12 | 390f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 146 | 3910::/12 | 391f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 147 | 3920::/12 | 392f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 148 | 3930::/12 | 393f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 149 | 3940::/12 | 394f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 150 | 3950::/12 | 395f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 151 | 3960::/12 | 396f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 152 | 3970::/12 | 397f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 153 | 3980::/12 | 398f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 154 | 3990::/12 | 399f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 155 | 39a0::/12 | 39af:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 156 | 39b0::/12 | 39bf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 157 | 39c0::/12 | 39cf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 158 | 39d0::/12 | 39df:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 159 | 39e0::/12 | 39ef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 160 | 39f0::/12 | 39ff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 161 | 3a00::/12 | 3a0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 162 | 3a10::/12 | 3a1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 163 | 3a20::/12 | 3a2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 164 | 3a30::/12 | 3a3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 165 | 3a40::/12 | 3a4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 166 | 3a50::/12 | 3a5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 167 | 3a60::/12 | 3a6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 168 | 3a70::/12 | 3a7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 169 | 3a80::/12 | 3a8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 170 | 3a90::/12 | 3a9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 171 | 3aa0::/12 | 3aaf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 172 | 3ab0::/12 | 3abf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 173 | 3ac0::/12 | 3acf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 174 | 3ad0::/12 | 3adf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 175 | 3ae0::/12 | 3aef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 176 | 3af0::/12 | 3aff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 177 | 3b00::/12 | 3b0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 178 | 3b10::/12 | 3b1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 179 | 3b20::/12 | 3b2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 180 | 3b30::/12 | 3b3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 181 | 3b40::/12 | 3b4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 182 | 3b50::/12 | 3b5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 183 | 3b60::/12 | 3b6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 184 | 3b70::/12 | 3b7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 185 | 3b80::/12 | 3b8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 186 | 3b90::/12 | 3b9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 187 | 3ba0::/12 | 3baf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 188 | 3bb0::/12 | 3bbf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 189 | 3bc0::/12 | 3bcf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 190 | 3bd0::/12 | 3bdf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 191 | 3be0::/12 | 3bef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 192 | 3bf0::/12 | 3bff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 193 | 3c00::/12 | 3c0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 194 | 3c10::/12 | 3c1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 195 | 3c20::/12 | 3c2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 196 | 3c30::/12 | 3c3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 197 | 3c40::/12 | 3c4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 198 | 3c50::/12 | 3c5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 199 | 3c60::/12 | 3c6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 200 | 3c70::/12 | 3c7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 201 | 3c80::/12 | 3c8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 202 | 3c90::/12 | 3c9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 203 | 3ca0::/12 | 3caf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 204 | 3cb0::/12 | 3cbf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 205 | 3cc0::/12 | 3ccf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 206 | 3cd0::/12 | 3cdf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 207 | 3ce0::/12 | 3cef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 208 | 3cf0::/12 | 3cff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 209 | 3d00::/12 | 3d0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 210 | 3d10::/12 | 3d1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 211 | 3d20::/12 | 3d2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 212 | 3d30::/12 | 3d3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 213 | 3d40::/12 | 3d4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 214 | 3d50::/12 | 3d5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 215 | 3d60::/12 | 3d6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 216 | 3d70::/12 | 3d7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 217 | 3d80::/12 | 3d8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 218 | 3d90::/12 | 3d9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 219 | 3da0::/12 | 3daf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 220 | 3db0::/12 | 3dbf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 221 | 3dc0::/12 | 3dcf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 222 | 3dd0::/12 | 3ddf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 223 | 3de0::/12 | 3def:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 224 | 3df0::/12 | 3dff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 225 | 3e00::/12 | 3e0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 226 | 3e10::/12 | 3e1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 227 | 3e20::/12 | 3e2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 228 | 3e30::/12 | 3e3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 229 | 3e40::/12 | 3e4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 230 | 3e50::/12 | 3e5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 231 | 3e60::/12 | 3e6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 232 | 3e70::/12 | 3e7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 233 | 3e80::/12 | 3e8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 234 | 3e90::/12 | 3e9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 235 | 3ea0::/12 | 3eaf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 236 | 3eb0::/12 | 3ebf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 237 | 3ec0::/12 | 3ecf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 238 | 3ed0::/12 | 3edf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 239 | 3ee0::/12 | 3eef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 240 | 3ef0::/12 | 3eff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 241 | 3f00::/12 | 3f0f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 242 | 3f10::/12 | 3f1f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 243 | 3f20::/12 | 3f2f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 244 | 3f30::/12 | 3f3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 245 | 3f40::/12 | 3f4f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 246 | 3f50::/12 | 3f5f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 247 | 3f60::/12 | 3f6f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 248 | 3f70::/12 | 3f7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 249 | 3f80::/12 | 3f8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 250 | 3f90::/12 | 3f9f:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 251 | 3fa0::/12 | 3faf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 252 | 3fb0::/12 | 3fbf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 253 | 3fc0::/12 | 3fcf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 254 | 3fd0::/12 | 3fdf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 255 | 3fe0::/12 | 3fef:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
| 256 | 3ff0::/12 | 3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
IPv4 CIDR reference (/0 to /32)
| Prefix | Subnet mask | Wildcard | Addresses | Usable hosts | Size | Typical use |
|---|---|---|---|---|---|---|
| /0 | 0.0.0.0 | 255.255.255.255 | 4,294,967,296 | 4,294,967,294 | 16,777,216 × /24 | |
| /1 | 128.0.0.0 | 127.255.255.255 | 2,147,483,648 | 2,147,483,646 | 8,388,608 × /24 | |
| /2 | 192.0.0.0 | 63.255.255.255 | 1,073,741,824 | 1,073,741,822 | 4,194,304 × /24 | |
| /3 | 224.0.0.0 | 31.255.255.255 | 536,870,912 | 536,870,910 | 2,097,152 × /24 | |
| /4 | 240.0.0.0 | 15.255.255.255 | 268,435,456 | 268,435,454 | 1,048,576 × /24 | |
| /5 | 248.0.0.0 | 7.255.255.255 | 134,217,728 | 134,217,726 | 524,288 × /24 | |
| /6 | 252.0.0.0 | 3.255.255.255 | 67,108,864 | 67,108,862 | 262,144 × /24 | |
| /7 | 254.0.0.0 | 1.255.255.255 | 33,554,432 | 33,554,430 | 131,072 × /24 | |
| /8 | 255.0.0.0 | 0.255.255.255 | 16,777,216 | 16,777,214 | 65,536 × /24 | Old class A; 10.0.0.0/8 |
| /9 | 255.128.0.0 | 0.127.255.255 | 8,388,608 | 8,388,606 | 32,768 × /24 | |
| /10 | 255.192.0.0 | 0.63.255.255 | 4,194,304 | 4,194,302 | 16,384 × /24 | |
| /11 | 255.224.0.0 | 0.31.255.255 | 2,097,152 | 2,097,150 | 8,192 × /24 | |
| /12 | 255.240.0.0 | 0.15.255.255 | 1,048,576 | 1,048,574 | 4,096 × /24 | 172.16.0.0/12 |
| /13 | 255.248.0.0 | 0.7.255.255 | 524,288 | 524,286 | 2,048 × /24 | |
| /14 | 255.252.0.0 | 0.3.255.255 | 262,144 | 262,142 | 1,024 × /24 | |
| /15 | 255.254.0.0 | 0.1.255.255 | 131,072 | 131,070 | 512 × /24 | |
| /16 | 255.255.0.0 | 0.0.255.255 | 65,536 | 65,534 | 256 × /24 | Old class B; 192.168.0.0/16 |
| /17 | 255.255.128.0 | 0.0.127.255 | 32,768 | 32,766 | 128 × /24 | |
| /18 | 255.255.192.0 | 0.0.63.255 | 16,384 | 16,382 | 64 × /24 | |
| /19 | 255.255.224.0 | 0.0.31.255 | 8,192 | 8,190 | 32 × /24 | |
| /20 | 255.255.240.0 | 0.0.15.255 | 4,096 | 4,094 | 16 × /24 | |
| /21 | 255.255.248.0 | 0.0.7.255 | 2,048 | 2,046 | 8 × /24 | |
| /22 | 255.255.252.0 | 0.0.3.255 | 1,024 | 1,022 | 4 × /24 | Large office or guest Wi-Fi (1,022 hosts) |
| /23 | 255.255.254.0 | 0.0.1.255 | 512 | 510 | 2 × /24 | Larger office LAN (510 hosts) |
| /24 | 255.255.255.0 | 0.0.0.255 | 256 | 254 | 1 × /24 | Typical office LAN (old class C) |
| /25 | 255.255.255.128 | 0.0.0.127 | 128 | 126 | 1/2 of a /24 | Smaller LAN or VLAN |
| /26 | 255.255.255.192 | 0.0.0.63 | 64 | 62 | 1/4 of a /24 | Smaller LAN or VLAN |
| /27 | 255.255.255.224 | 0.0.0.31 | 32 | 30 | 1/8 of a /24 | Small VLAN, phones, cameras |
| /28 | 255.255.255.240 | 0.0.0.15 | 16 | 14 | 1/16 of a /24 | Small VLAN, phones, cameras |
| /29 | 255.255.255.248 | 0.0.0.7 | 8 | 6 | 1/32 of a /24 | Small fixed public block (5 usable) |
| /30 | 255.255.255.252 | 0.0.0.3 | 4 | 2 | 1/64 of a /24 | Point-to-point (old style) |
| /31 | 255.255.255.254 | 0.0.0.1 | 2 | 2 | 1/128 of a /24 | Point-to-point link (RFC 3021) |
| /32 | 255.255.255.255 | 0.0.0.0 | 1 | 1 | 1/256 of a /24 | One host |
IPv6 prefix reference
| Prefix | Addresses | /64 LANs | /48 sites | Nibble | Typical use |
|---|---|---|---|---|---|
| /3 | 42,535,295,865,117,307,932,921,825,928,971,026,432 (2^125) | 2,305,843,009,213,693,952 | 35,184,372,088,832 | No | All global unicast (2000::/3) |
| /16 | 5,192,296,858,534,827,628,530,496,329,220,096 (2^112) | 281,474,976,710,656 | 4,294,967,296 | Yes | |
| /20 | 324,518,553,658,426,726,783,156,020,576,256 (2^108) | 17,592,186,044,416 | 268,435,456 | Yes | Large provider allocation (RIPE minimum for some) |
| /29 | 633,825,300,114,114,700,748,351,602,688 (2^99) | 34,359,738,368 | 524,288 | No | RIPE allocation to a provider (often) |
| /32 | 79,228,162,514,264,337,593,543,950,336 (2^96) | 4,294,967,296 | 65,536 | Yes | Provider allocation (RIPE default) |
| /36 | 4,951,760,157,141,521,099,596,496,896 (2^92) | 268,435,456 | 4,096 | Yes | |
| /40 | 309,485,009,821,345,068,724,781,056 (2^88) | 16,777,216 | 256 | Yes | |
| /44 | 19,342,813,113,834,066,795,298,816 (2^84) | 1,048,576 | 16 | Yes | |
| /48 | 1,208,925,819,614,629,174,706,176 (2^80) | 65,536 | 1 | Yes | One site or organisation (RIPE PI / assignment) |
| /52 | 75,557,863,725,914,323,419,136 (2^76) | 4,096 | Yes | ||
| /56 | 4,722,366,482,869,645,213,696 (2^72) | 256 | Yes | Small site or home (common provider assignment) | |
| /60 | 295,147,905,179,352,825,856 (2^68) | 16 | Yes | Some home broadband (16 LANs) | |
| /64 | 18,446,744,073,709,551,616 (2^64) | 1 | Yes | One LAN or VLAN (needed for SLAAC) | |
| /72 | 72,057,594,037,927,936 (2^56) | 1/256 of a /64 | Yes | ||
| /80 | 281,474,976,710,656 (2^48) | 1/65,536 of a /64 | Yes | ||
| /96 | 4,294,967,296 | 1/4,294,967,296 of a /64 | Yes | Embeds an IPv4 address (NAT64) | |
| /112 | 65,536 | 1/281,474,976,710,656 of a /64 | Yes | ||
| /120 | 256 | 1/72,057,594,037,927,936 of a /64 | Yes | ||
| /124 | 16 | 1/1,152,921,504,606,846,976 of a /64 | Yes | ||
| /126 | 4 | 1/4,611,686,018,427,387,904 of a /64 | No | ||
| /127 | 2 | 1/9,223,372,036,854,775,808 of a /64 | No | Point-to-point link (RFC 6164) | |
| /128 | 1 | 1/18,446,744,073,709,551,616 of a /64 | Yes | One host or loopback |
Private and special ranges
IPv4
| Range | Name | What it is |
|---|---|---|
255.255.255.255/32 | Limited broadcast | Every host on the local network |
0.0.0.0/8 | This network | Not routed; 0.0.0.0 means "any address" in settings |
10.0.0.0/8 | Private (RFC 1918) | Office and home networks; not routed on the internet |
100.64.0.0/10 | Shared address space (CGNAT) | Used by providers behind carrier-grade NAT (RFC 6598) |
127.0.0.0/8 | Loopback | This computer |
169.254.0.0/16 | Link-local (APIPA) | Self-assigned when no DHCP server answers |
172.16.0.0/12 | Private (RFC 1918) | Office and home networks; not routed on the internet |
192.0.0.0/24 | IETF protocol assignments | Special uses such as DS-Lite |
192.0.2.0/24 | Documentation (TEST-NET-1) | For examples; never used on a network |
192.88.99.0/24 | 6to4 relay (deprecated) | Formerly anycast for 6to4 |
192.168.0.0/16 | Private (RFC 1918) | Office and home networks; not routed on the internet |
198.18.0.0/15 | Benchmarking | Network equipment testing (RFC 2544) |
198.51.100.0/24 | Documentation (TEST-NET-2) | For examples; never used on a network |
203.0.113.0/24 | Documentation (TEST-NET-3) | For examples; never used on a network |
224.0.0.0/4 | Multicast | One-to-many traffic, such as IPTV and routing protocols |
240.0.0.0/4 | Reserved | Future use; not usable on most systems |
IPv6
| Range | Name | What it is |
|---|---|---|
::/128 | Unspecified | No address; :: means "any address" in settings |
::1/128 | Loopback | This computer |
::ffff:0:0/96 | IPv4-mapped | An IPv4 address written as IPv6 |
64:ff9b::/96 | NAT64 | IPv4 addresses reached through a NAT64 gateway |
100::/64 | Discard only | Traffic sent here is dropped (RFC 6666) |
2001:db8::/32 | Documentation | For examples; never used on a network |
2001::/32 | Teredo | IPv6 tunnelled over IPv4 UDP |
2002::/16 | 6to4 | IPv6 tunnelled over IPv4 (largely retired) |
3fff::/20 | Documentation | For examples (RFC 9637) |
fc00::/7 | Unique local (ULA) | Private IPv6, like RFC 1918; usually fd00::/8 |
fe80::/10 | Link-local | Every IPv6 interface has one; not routed |
ff00::/8 | Multicast | One-to-many traffic; replaces broadcast |
2000::/3 | Global unicast | Public internet addresses |