L'indirizzo IP 73.172.21 è fornito da Comcast Cable Communications, LLC, che è di proprietà del CIDR (Classless Inter-Domain Routing) 73.0.0.0/8, IP tra 73.0.0.0 a 73.255.255.255 ). Il numero di sistema autonomo (ASN) è 7922.
| ASN | 7922 |
| IP inizia con | 73.0.0.0 |
| IP finale con | 73.255.255.255 |
| ASN Nome | Comcast Cable Communications, LLC |
| CDIR | 73.0.0.0/8 |
| IP numerico | |
| Registe | arin |
| Ultimo aggiornamento | 04/08/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Baltimore | 39,2904 | -76,6122 | 2017-08-03 |
| MaxMind | US | United States | - | Baltimore | 39,3041 | -76,6642 | 2017-08-03 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 73.172.21.0 | 1236014336 | 0 |
| 73.172.21.1 | 1236014337 | 0 |
| 73.172.21.2 | 1236014338 | 0 |
| 73.172.21.3 | 1236014339 | 0 |
| 73.172.21.4 | 1236014340 | 0 |
| 73.172.21.5 | 1236014341 | 0 |
| 73.172.21.6 | 1236014342 | 0 |
| 73.172.21.7 | 1236014343 | 0 |
| 73.172.21.8 | 1236014344 | 0 |
| 73.172.21.9 | 1236014345 | 0 |
| 73.172.21.10 | 1236014346 | 0 |
| 73.172.21.11 | 1236014347 | 0 |
| 73.172.21.12 | 1236014348 | 0 |
| 73.172.21.13 | 1236014349 | 0 |
| 73.172.21.14 | 1236014350 | 0 |
| 73.172.21.15 | 1236014351 | 0 |
| 73.172.21.16 | 1236014352 | 0 |
| 73.172.21.17 | 1236014353 | 0 |
| 73.172.21.18 | 1236014354 | 0 |
| 73.172.21.19 | 1236014355 | 0 |
| 73.172.21.20 | 1236014356 | 0 |
| 73.172.21.21 | 1236014357 | 0 |
| 73.172.21.22 | 1236014358 | 0 |
| 73.172.21.23 | 1236014359 | 0 |
| 73.172.21.24 | 1236014360 | 0 |
| 73.172.21.25 | 1236014361 | 0 |
| 73.172.21.26 | 1236014362 | 0 |
| 73.172.21.27 | 1236014363 | 0 |
| 73.172.21.28 | 1236014364 | 0 |
| 73.172.21.29 | 1236014365 | 0 |
| 73.172.21.30 | 1236014366 | 0 |
| 73.172.21.31 | 1236014367 | 0 |
| 73.172.21.32 | 1236014368 | 0 |
| 73.172.21.33 | 1236014369 | 0 |
| 73.172.21.34 | 1236014370 | 0 |
| 73.172.21.35 | 1236014371 | 0 |
| 73.172.21.36 | 1236014372 | 0 |
| 73.172.21.37 | 1236014373 | 0 |
| 73.172.21.38 | 1236014374 | 0 |
| 73.172.21.39 | 1236014375 | 0 |
| 73.172.21.40 | 1236014376 | 0 |
| 73.172.21.41 | 1236014377 | 0 |
| 73.172.21.42 | 1236014378 | 0 |
| 73.172.21.43 | 1236014379 | 0 |
| 73.172.21.44 | 1236014380 | 0 |
| 73.172.21.45 | 1236014381 | 0 |
| 73.172.21.46 | 1236014382 | 0 |
| 73.172.21.47 | 1236014383 | 0 |
| 73.172.21.48 | 1236014384 | 0 |
| 73.172.21.49 | 1236014385 | 0 |
| 73.172.21.50 | 1236014386 | 0 |
| 73.172.21.51 | 1236014387 | 0 |
| 73.172.21.52 | 1236014388 | 0 |
| 73.172.21.53 | 1236014389 | 0 |
| 73.172.21.54 | 1236014390 | 0 |
| 73.172.21.55 | 1236014391 | 0 |
| 73.172.21.56 | 1236014392 | 0 |
| 73.172.21.57 | 1236014393 | 0 |
| 73.172.21.58 | 1236014394 | 0 |
| 73.172.21.59 | 1236014395 | 0 |
| 73.172.21.60 | 1236014396 | 0 |
| 73.172.21.61 | 1236014397 | 0 |
| 73.172.21.62 | 1236014398 | 0 |
| 73.172.21.63 | 1236014399 | 0 |
| 73.172.21.64 | 1236014400 | 0 |
| 73.172.21.65 | 1236014401 | 0 |
| 73.172.21.66 | 1236014402 | 0 |
| 73.172.21.67 | 1236014403 | 0 |
| 73.172.21.68 | 1236014404 | 0 |
| 73.172.21.69 | 1236014405 | 0 |
| 73.172.21.70 | 1236014406 | 0 |
| 73.172.21.71 | 1236014407 | 0 |
| 73.172.21.72 | 1236014408 | 0 |
| 73.172.21.73 | 1236014409 | 0 |
| 73.172.21.74 | 1236014410 | 0 |
| 73.172.21.75 | 1236014411 | 0 |
| 73.172.21.76 | 1236014412 | 0 |
| 73.172.21.77 | 1236014413 | 0 |
| 73.172.21.78 | 1236014414 | 0 |
| 73.172.21.79 | 1236014415 | 0 |
| 73.172.21.80 | 1236014416 | 0 |
| 73.172.21.81 | 1236014417 | 0 |
| 73.172.21.82 | 1236014418 | 0 |
| 73.172.21.83 | 1236014419 | 0 |
| 73.172.21.84 | 1236014420 | 0 |
| 73.172.21.85 | 1236014421 | 0 |