Les adresses IP débutant par 121.156.2 sont fournies par Korea Telecom, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.128.0.0/11, le bloc IP comprant les adresses de 121.128.0.0 à 121.159.255.255). Le numéro de système autonome (ASN) est 4766.
| ASN | 4766 |
| IP commençant par | 121.128.0.0 |
| IP se terminant par | 121.159.255.255 |
| Nom ASN | Korea Telecom |
| CDIR | 121.128.0.0/11 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 15/01/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | KR | Korea, Republic of | - | Chinju | 35,1928 | 128,0847 | 2018-01-15 |
| MaxMind | KR | Corée du Sud | - | Gimhae | 35,2342 | 128,8811 | 2018-01-15 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.156.2.0 | 2040267264 | 0 |
| 121.156.2.1 | 2040267265 | 0 |
| 121.156.2.2 | 2040267266 | 0 |
| 121.156.2.3 | 2040267267 | 0 |
| 121.156.2.4 | 2040267268 | 0 |
| 121.156.2.5 | 2040267269 | 0 |
| 121.156.2.6 | 2040267270 | 0 |
| 121.156.2.7 | 2040267271 | 0 |
| 121.156.2.8 | 2040267272 | 0 |
| 121.156.2.9 | 2040267273 | 0 |
| 121.156.2.10 | 2040267274 | 0 |
| 121.156.2.11 | 2040267275 | 0 |
| 121.156.2.12 | 2040267276 | 0 |
| 121.156.2.13 | 2040267277 | 0 |
| 121.156.2.14 | 2040267278 | 0 |
| 121.156.2.15 | 2040267279 | 0 |
| 121.156.2.16 | 2040267280 | 0 |
| 121.156.2.17 | 2040267281 | 0 |
| 121.156.2.18 | 2040267282 | 0 |
| 121.156.2.19 | 2040267283 | 0 |
| 121.156.2.20 | 2040267284 | 0 |
| 121.156.2.21 | 2040267285 | 0 |
| 121.156.2.22 | 2040267286 | 0 |
| 121.156.2.23 | 2040267287 | 0 |
| 121.156.2.24 | 2040267288 | 0 |
| 121.156.2.25 | 2040267289 | 0 |
| 121.156.2.26 | 2040267290 | 0 |
| 121.156.2.27 | 2040267291 | 0 |
| 121.156.2.28 | 2040267292 | 0 |
| 121.156.2.29 | 2040267293 | 0 |
| 121.156.2.30 | 2040267294 | 0 |
| 121.156.2.31 | 2040267295 | 0 |
| 121.156.2.32 | 2040267296 | 0 |
| 121.156.2.33 | 2040267297 | 0 |
| 121.156.2.34 | 2040267298 | 0 |
| 121.156.2.35 | 2040267299 | 0 |
| 121.156.2.36 | 2040267300 | 0 |
| 121.156.2.37 | 2040267301 | 0 |
| 121.156.2.38 | 2040267302 | 0 |
| 121.156.2.39 | 2040267303 | 0 |
| 121.156.2.40 | 2040267304 | 0 |
| 121.156.2.41 | 2040267305 | 0 |
| 121.156.2.42 | 2040267306 | 0 |
| 121.156.2.43 | 2040267307 | 0 |
| 121.156.2.44 | 2040267308 | 0 |
| 121.156.2.45 | 2040267309 | 0 |
| 121.156.2.46 | 2040267310 | 0 |
| 121.156.2.47 | 2040267311 | 0 |
| 121.156.2.48 | 2040267312 | 0 |
| 121.156.2.49 | 2040267313 | 0 |
| 121.156.2.50 | 2040267314 | 0 |
| 121.156.2.51 | 2040267315 | 0 |
| 121.156.2.52 | 2040267316 | 0 |
| 121.156.2.53 | 2040267317 | 0 |
| 121.156.2.54 | 2040267318 | 0 |
| 121.156.2.55 | 2040267319 | 0 |
| 121.156.2.56 | 2040267320 | 0 |
| 121.156.2.57 | 2040267321 | 0 |
| 121.156.2.58 | 2040267322 | 0 |
| 121.156.2.59 | 2040267323 | 0 |
| 121.156.2.60 | 2040267324 | 0 |
| 121.156.2.61 | 2040267325 | 0 |
| 121.156.2.62 | 2040267326 | 0 |
| 121.156.2.63 | 2040267327 | 0 |
| 121.156.2.64 | 2040267328 | 0 |
| 121.156.2.65 | 2040267329 | 0 |
| 121.156.2.66 | 2040267330 | 0 |
| 121.156.2.67 | 2040267331 | 0 |
| 121.156.2.68 | 2040267332 | 0 |
| 121.156.2.69 | 2040267333 | 0 |
| 121.156.2.70 | 2040267334 | 0 |
| 121.156.2.71 | 2040267335 | 0 |
| 121.156.2.72 | 2040267336 | 0 |
| 121.156.2.73 | 2040267337 | 0 |
| 121.156.2.74 | 2040267338 | 0 |
| 121.156.2.75 | 2040267339 | 0 |
| 121.156.2.76 | 2040267340 | 0 |
| 121.156.2.77 | 2040267341 | 0 |
| 121.156.2.78 | 2040267342 | 0 |
| 121.156.2.79 | 2040267343 | 0 |
| 121.156.2.80 | 2040267344 | 0 |
| 121.156.2.81 | 2040267345 | 0 |
| 121.156.2.82 | 2040267346 | 0 |
| 121.156.2.83 | 2040267347 | 0 |
| 121.156.2.84 | 2040267348 | 0 |
| 121.156.2.85 | 2040267349 | 0 |