Les adresses IP débutant par 131.223.2 sont fournies par SURFnet, elles appartiennent au CIDR (Classless Inter-Domain Routing) 131.224.0.0/16, le bloc IP comprant les adresses de 131.224.0.0 à 131.224.255.255). Le numéro de système autonome (ASN) est 1103.
| ASN | 1103 |
| IP commençant par | 131.224.0.0 |
| IP se terminant par | 131.224.255.255 |
| Nom ASN | SURFnet |
| CDIR | 131.224.0.0/16 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 12/04/2020 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | NL | Pays-Bas | - | Bilthoven | 52,1283 | 5,1986 | 2020-04-11 |
| MaxMind | NL | Pays-Bas | - | - | 52,3824 | 4,8995 | 2020-04-11 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 131.223.2.0 | 2212430336 | 0 |
| 131.223.2.1 | 2212430337 | 0 |
| 131.223.2.2 | 2212430338 | 0 |
| 131.223.2.3 | 2212430339 | 0 |
| 131.223.2.4 | 2212430340 | 0 |
| 131.223.2.5 | 2212430341 | 0 |
| 131.223.2.6 | 2212430342 | 0 |
| 131.223.2.7 | 2212430343 | 0 |
| 131.223.2.8 | 2212430344 | 0 |
| 131.223.2.9 | 2212430345 | 0 |
| 131.223.2.10 | 2212430346 | 0 |
| 131.223.2.11 | 2212430347 | 0 |
| 131.223.2.12 | 2212430348 | 0 |
| 131.223.2.13 | 2212430349 | 0 |
| 131.223.2.14 | 2212430350 | 0 |
| 131.223.2.15 | 2212430351 | 0 |
| 131.223.2.16 | 2212430352 | 0 |
| 131.223.2.17 | 2212430353 | 0 |
| 131.223.2.18 | 2212430354 | 0 |
| 131.223.2.19 | 2212430355 | 0 |
| 131.223.2.20 | 2212430356 | 0 |
| 131.223.2.21 | 2212430357 | 0 |
| 131.223.2.22 | 2212430358 | 0 |
| 131.223.2.23 | 2212430359 | 0 |
| 131.223.2.24 | 2212430360 | 0 |
| 131.223.2.25 | 2212430361 | 0 |
| 131.223.2.26 | 2212430362 | 0 |
| 131.223.2.27 | 2212430363 | 0 |
| 131.223.2.28 | 2212430364 | 0 |
| 131.223.2.29 | 2212430365 | 0 |
| 131.223.2.30 | 2212430366 | 0 |
| 131.223.2.31 | 2212430367 | 0 |
| 131.223.2.32 | 2212430368 | 0 |
| 131.223.2.33 | 2212430369 | 0 |
| 131.223.2.34 | 2212430370 | 0 |
| 131.223.2.35 | 2212430371 | 0 |
| 131.223.2.36 | 2212430372 | 0 |
| 131.223.2.37 | 2212430373 | 0 |
| 131.223.2.38 | 2212430374 | 0 |
| 131.223.2.39 | 2212430375 | 0 |
| 131.223.2.40 | 2212430376 | 0 |
| 131.223.2.41 | 2212430377 | 0 |
| 131.223.2.42 | 2212430378 | 0 |
| 131.223.2.43 | 2212430379 | 0 |
| 131.223.2.44 | 2212430380 | 0 |
| 131.223.2.45 | 2212430381 | 0 |
| 131.223.2.46 | 2212430382 | 0 |
| 131.223.2.47 | 2212430383 | 0 |
| 131.223.2.48 | 2212430384 | 0 |
| 131.223.2.49 | 2212430385 | 0 |
| 131.223.2.50 | 2212430386 | 0 |
| 131.223.2.51 | 2212430387 | 0 |
| 131.223.2.52 | 2212430388 | 0 |
| 131.223.2.53 | 2212430389 | 0 |
| 131.223.2.54 | 2212430390 | 0 |
| 131.223.2.55 | 2212430391 | 0 |
| 131.223.2.56 | 2212430392 | 0 |
| 131.223.2.57 | 2212430393 | 0 |
| 131.223.2.58 | 2212430394 | 0 |
| 131.223.2.59 | 2212430395 | 0 |
| 131.223.2.60 | 2212430396 | 0 |
| 131.223.2.61 | 2212430397 | 0 |
| 131.223.2.62 | 2212430398 | 0 |
| 131.223.2.63 | 2212430399 | 0 |
| 131.223.2.64 | 2212430400 | 0 |
| 131.223.2.65 | 2212430401 | 0 |
| 131.223.2.66 | 2212430402 | 0 |
| 131.223.2.67 | 2212430403 | 0 |
| 131.223.2.68 | 2212430404 | 0 |
| 131.223.2.69 | 2212430405 | 0 |
| 131.223.2.70 | 2212430406 | 0 |
| 131.223.2.71 | 2212430407 | 0 |
| 131.223.2.72 | 2212430408 | 0 |
| 131.223.2.73 | 2212430409 | 0 |
| 131.223.2.74 | 2212430410 | 0 |
| 131.223.2.75 | 2212430411 | 0 |
| 131.223.2.76 | 2212430412 | 0 |
| 131.223.2.77 | 2212430413 | 0 |
| 131.223.2.78 | 2212430414 | 0 |
| 131.223.2.79 | 2212430415 | 0 |
| 131.223.2.80 | 2212430416 | 0 |
| 131.223.2.81 | 2212430417 | 0 |
| 131.223.2.82 | 2212430418 | 0 |
| 131.223.2.83 | 2212430419 | 0 |
| 131.223.2.84 | 2212430420 | 0 |
| 131.223.2.85 | 2212430421 | 0 |