La dirección IP 66.73.121 es proporcionada por AT&T Services, Inc., que es propiedad de la CIDR (Classless Inter-Domain Routing) 66.72.0.0/15, IP entre 66.72.0.0 a 66.73.255.255 ). El número de sistema autónomo (ASN) es 7018.
| ASN | 7018 |
| IP que comienzan con | 66.72.0.0 |
| IP que termina con | 66.73.255.255 |
| ASN Nombre | AT&T Services, Inc. |
| CDIR | 66.72.0.0/15 |
| IP numérica | |
| Registe | arin |
| Última actualización | 22/07/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Chicago | 41,85 | -87,6501 | 2018-02-06 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2018-02-06 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 66.73.121.0 | 1112111360 | 0 |
| 66.73.121.1 | 1112111361 | 0 |
| 66.73.121.2 | 1112111362 | 0 |
| 66.73.121.3 | 1112111363 | 0 |
| 66.73.121.4 | 1112111364 | 0 |
| 66.73.121.5 | 1112111365 | 0 |
| 66.73.121.6 | 1112111366 | 0 |
| 66.73.121.7 | 1112111367 | 0 |
| 66.73.121.8 | 1112111368 | 0 |
| 66.73.121.9 | 1112111369 | 0 |
| 66.73.121.10 | 1112111370 | 0 |
| 66.73.121.11 | 1112111371 | 0 |
| 66.73.121.12 | 1112111372 | 0 |
| 66.73.121.13 | 1112111373 | 0 |
| 66.73.121.14 | 1112111374 | 0 |
| 66.73.121.15 | 1112111375 | 0 |
| 66.73.121.16 | 1112111376 | 0 |
| 66.73.121.17 | 1112111377 | 0 |
| 66.73.121.18 | 1112111378 | 0 |
| 66.73.121.19 | 1112111379 | 0 |
| 66.73.121.20 | 1112111380 | 0 |
| 66.73.121.21 | 1112111381 | 0 |
| 66.73.121.22 | 1112111382 | 0 |
| 66.73.121.23 | 1112111383 | 0 |
| 66.73.121.24 | 1112111384 | 0 |
| 66.73.121.25 | 1112111385 | 0 |
| 66.73.121.26 | 1112111386 | 0 |
| 66.73.121.27 | 1112111387 | 0 |
| 66.73.121.28 | 1112111388 | 0 |
| 66.73.121.29 | 1112111389 | 0 |
| 66.73.121.30 | 1112111390 | 0 |
| 66.73.121.31 | 1112111391 | 0 |
| 66.73.121.32 | 1112111392 | 0 |
| 66.73.121.33 | 1112111393 | 0 |
| 66.73.121.34 | 1112111394 | 0 |
| 66.73.121.35 | 1112111395 | 0 |
| 66.73.121.36 | 1112111396 | 0 |
| 66.73.121.37 | 1112111397 | 0 |
| 66.73.121.38 | 1112111398 | 0 |
| 66.73.121.39 | 1112111399 | 0 |
| 66.73.121.40 | 1112111400 | 0 |
| 66.73.121.41 | 1112111401 | 0 |
| 66.73.121.42 | 1112111402 | 0 |
| 66.73.121.43 | 1112111403 | 0 |
| 66.73.121.44 | 1112111404 | 0 |
| 66.73.121.45 | 1112111405 | 0 |
| 66.73.121.46 | 1112111406 | 0 |
| 66.73.121.47 | 1112111407 | 0 |
| 66.73.121.48 | 1112111408 | 0 |
| 66.73.121.49 | 1112111409 | 0 |
| 66.73.121.50 | 1112111410 | 0 |
| 66.73.121.51 | 1112111411 | 0 |
| 66.73.121.52 | 1112111412 | 0 |
| 66.73.121.53 | 1112111413 | 0 |
| 66.73.121.54 | 1112111414 | 0 |
| 66.73.121.55 | 1112111415 | 0 |
| 66.73.121.56 | 1112111416 | 0 |
| 66.73.121.57 | 1112111417 | 0 |
| 66.73.121.58 | 1112111418 | 0 |
| 66.73.121.59 | 1112111419 | 0 |
| 66.73.121.60 | 1112111420 | 0 |
| 66.73.121.61 | 1112111421 | 0 |
| 66.73.121.62 | 1112111422 | 0 |
| 66.73.121.63 | 1112111423 | 0 |
| 66.73.121.64 | 1112111424 | 0 |
| 66.73.121.65 | 1112111425 | 0 |
| 66.73.121.66 | 1112111426 | 0 |
| 66.73.121.67 | 1112111427 | 0 |
| 66.73.121.68 | 1112111428 | 0 |
| 66.73.121.69 | 1112111429 | 0 |
| 66.73.121.70 | 1112111430 | 0 |
| 66.73.121.71 | 1112111431 | 0 |
| 66.73.121.72 | 1112111432 | 0 |
| 66.73.121.73 | 1112111433 | 0 |
| 66.73.121.74 | 1112111434 | 0 |
| 66.73.121.75 | 1112111435 | 0 |
| 66.73.121.76 | 1112111436 | 0 |
| 66.73.121.77 | 1112111437 | 0 |
| 66.73.121.78 | 1112111438 | 0 |
| 66.73.121.79 | 1112111439 | 0 |
| 66.73.121.80 | 1112111440 | 0 |
| 66.73.121.81 | 1112111441 | 0 |
| 66.73.121.82 | 1112111442 | 0 |
| 66.73.121.83 | 1112111443 | 0 |
| 66.73.121.84 | 1112111444 | 0 |
| 66.73.121.85 | 1112111445 | 0 |