L'indirizzo IP 172.5.123 è fornito da AT&T Services, Inc., che è di proprietà del CIDR (Classless Inter-Domain Routing) 172.0.0.0/12, IP tra 172.0.0.0 a 172.15.255.255 ). Il numero di sistema autonomo (ASN) è 7018.
| ASN | 7018 |
| IP inizia con | 172.0.0.0 |
| IP finale con | 172.15.255.255 |
| ASN Nome | AT&T Services, Inc. |
| CDIR | 172.0.0.0/12 |
| IP numerico | |
| Registe | arin |
| Ultimo aggiornamento | 15/10/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Santa Clara | 37,3541 | -121,9552 | 2017-10-14 |
| MaxMind | US | United States | - | San Leandro | 37,6866 | -122,1569 | 2017-10-14 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 172.5.123.0 | 2886040320 | 0 |
| 172.5.123.1 | 2886040321 | 0 |
| 172.5.123.2 | 2886040322 | 0 |
| 172.5.123.3 | 2886040323 | 0 |
| 172.5.123.4 | 2886040324 | 0 |
| 172.5.123.5 | 2886040325 | 0 |
| 172.5.123.6 | 2886040326 | 0 |
| 172.5.123.7 | 2886040327 | 0 |
| 172.5.123.8 | 2886040328 | 0 |
| 172.5.123.9 | 2886040329 | 0 |
| 172.5.123.10 | 2886040330 | 0 |
| 172.5.123.11 | 2886040331 | 0 |
| 172.5.123.12 | 2886040332 | 0 |
| 172.5.123.13 | 2886040333 | 0 |
| 172.5.123.14 | 2886040334 | 0 |
| 172.5.123.15 | 2886040335 | 0 |
| 172.5.123.16 | 2886040336 | 0 |
| 172.5.123.17 | 2886040337 | 0 |
| 172.5.123.18 | 2886040338 | 0 |
| 172.5.123.19 | 2886040339 | 0 |
| 172.5.123.20 | 2886040340 | 0 |
| 172.5.123.21 | 2886040341 | 0 |
| 172.5.123.22 | 2886040342 | 0 |
| 172.5.123.23 | 2886040343 | 0 |
| 172.5.123.24 | 2886040344 | 0 |
| 172.5.123.25 | 2886040345 | 0 |
| 172.5.123.26 | 2886040346 | 0 |
| 172.5.123.27 | 2886040347 | 0 |
| 172.5.123.28 | 2886040348 | 0 |
| 172.5.123.29 | 2886040349 | 0 |
| 172.5.123.30 | 2886040350 | 0 |
| 172.5.123.31 | 2886040351 | 0 |
| 172.5.123.32 | 2886040352 | 0 |
| 172.5.123.33 | 2886040353 | 0 |
| 172.5.123.34 | 2886040354 | 0 |
| 172.5.123.35 | 2886040355 | 0 |
| 172.5.123.36 | 2886040356 | 0 |
| 172.5.123.37 | 2886040357 | 0 |
| 172.5.123.38 | 2886040358 | 0 |
| 172.5.123.39 | 2886040359 | 0 |
| 172.5.123.40 | 2886040360 | 0 |
| 172.5.123.41 | 2886040361 | 0 |
| 172.5.123.42 | 2886040362 | 0 |
| 172.5.123.43 | 2886040363 | 0 |
| 172.5.123.44 | 2886040364 | 0 |
| 172.5.123.45 | 2886040365 | 0 |
| 172.5.123.46 | 2886040366 | 0 |
| 172.5.123.47 | 2886040367 | 0 |
| 172.5.123.48 | 2886040368 | 0 |
| 172.5.123.49 | 2886040369 | 0 |
| 172.5.123.50 | 2886040370 | 0 |
| 172.5.123.51 | 2886040371 | 0 |
| 172.5.123.52 | 2886040372 | 0 |
| 172.5.123.53 | 2886040373 | 0 |
| 172.5.123.54 | 2886040374 | 0 |
| 172.5.123.55 | 2886040375 | 0 |
| 172.5.123.56 | 2886040376 | 0 |
| 172.5.123.57 | 2886040377 | 0 |
| 172.5.123.58 | 2886040378 | 0 |
| 172.5.123.59 | 2886040379 | 0 |
| 172.5.123.60 | 2886040380 | 0 |
| 172.5.123.61 | 2886040381 | 0 |
| 172.5.123.62 | 2886040382 | 0 |
| 172.5.123.63 | 2886040383 | 0 |
| 172.5.123.64 | 2886040384 | 0 |
| 172.5.123.65 | 2886040385 | 0 |
| 172.5.123.66 | 2886040386 | 0 |
| 172.5.123.67 | 2886040387 | 0 |
| 172.5.123.68 | 2886040388 | 0 |
| 172.5.123.69 | 2886040389 | 0 |
| 172.5.123.70 | 2886040390 | 0 |
| 172.5.123.71 | 2886040391 | 0 |
| 172.5.123.72 | 2886040392 | 0 |
| 172.5.123.73 | 2886040393 | 0 |
| 172.5.123.74 | 2886040394 | 0 |
| 172.5.123.75 | 2886040395 | 0 |
| 172.5.123.76 | 2886040396 | 0 |
| 172.5.123.77 | 2886040397 | 0 |
| 172.5.123.78 | 2886040398 | 0 |
| 172.5.123.79 | 2886040399 | 0 |
| 172.5.123.80 | 2886040400 | 0 |
| 172.5.123.81 | 2886040401 | 0 |
| 172.5.123.82 | 2886040402 | 0 |
| 172.5.123.83 | 2886040403 | 0 |
| 172.5.123.84 | 2886040404 | 0 |
| 172.5.123.85 | 2886040405 | 0 |