Die IP-Adresse 42.21.12 erfolgt über SK Telecom, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 42.16.0.0/12 (Bereich 42.16.0.0, 42.31.255.255). Die autonomen Systemnummer (ASN) ist 9644.
| ASN | 9644 |
| Ausgehend von IP | 42.16.0.0 |
| Beendigung durch IP | 42.31.255.255 |
| ASN-Namen | SK Telecom |
| GGDV | 42.16.0.0/12 |
| Numerische IP | |
| Registrierung | apnic |
| Letztes update | 23.10.2017 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | KR | Korea, Republic of | - | Seoul | 37,5683 | 126,9778 | 2017-10-23 |
| MaxMind | KR | Südkorea | - | - | 37,5112 | 126,9741 | 2017-10-23 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 42.21.12.0 | 706022400 | 0 |
| 42.21.12.1 | 706022401 | 0 |
| 42.21.12.2 | 706022402 | 0 |
| 42.21.12.3 | 706022403 | 0 |
| 42.21.12.4 | 706022404 | 0 |
| 42.21.12.5 | 706022405 | 0 |
| 42.21.12.6 | 706022406 | 0 |
| 42.21.12.7 | 706022407 | 0 |
| 42.21.12.8 | 706022408 | 0 |
| 42.21.12.9 | 706022409 | 0 |
| 42.21.12.10 | 706022410 | 0 |
| 42.21.12.11 | 706022411 | 0 |
| 42.21.12.12 | 706022412 | 0 |
| 42.21.12.13 | 706022413 | 0 |
| 42.21.12.14 | 706022414 | 0 |
| 42.21.12.15 | 706022415 | 0 |
| 42.21.12.16 | 706022416 | 0 |
| 42.21.12.17 | 706022417 | 0 |
| 42.21.12.18 | 706022418 | 0 |
| 42.21.12.19 | 706022419 | 0 |
| 42.21.12.20 | 706022420 | 0 |
| 42.21.12.21 | 706022421 | 0 |
| 42.21.12.22 | 706022422 | 0 |
| 42.21.12.23 | 706022423 | 0 |
| 42.21.12.24 | 706022424 | 0 |
| 42.21.12.25 | 706022425 | 0 |
| 42.21.12.26 | 706022426 | 0 |
| 42.21.12.27 | 706022427 | 0 |
| 42.21.12.28 | 706022428 | 0 |
| 42.21.12.29 | 706022429 | 0 |
| 42.21.12.30 | 706022430 | 0 |
| 42.21.12.31 | 706022431 | 0 |
| 42.21.12.32 | 706022432 | 0 |
| 42.21.12.33 | 706022433 | 0 |
| 42.21.12.34 | 706022434 | 0 |
| 42.21.12.35 | 706022435 | 0 |
| 42.21.12.36 | 706022436 | 0 |
| 42.21.12.37 | 706022437 | 0 |
| 42.21.12.38 | 706022438 | 0 |
| 42.21.12.39 | 706022439 | 0 |
| 42.21.12.40 | 706022440 | 0 |
| 42.21.12.41 | 706022441 | 0 |
| 42.21.12.42 | 706022442 | 0 |
| 42.21.12.43 | 706022443 | 0 |
| 42.21.12.44 | 706022444 | 0 |
| 42.21.12.45 | 706022445 | 0 |
| 42.21.12.46 | 706022446 | 0 |
| 42.21.12.47 | 706022447 | 0 |
| 42.21.12.48 | 706022448 | 0 |
| 42.21.12.49 | 706022449 | 0 |
| 42.21.12.50 | 706022450 | 0 |
| 42.21.12.51 | 706022451 | 0 |
| 42.21.12.52 | 706022452 | 0 |
| 42.21.12.53 | 706022453 | 0 |
| 42.21.12.54 | 706022454 | 0 |
| 42.21.12.55 | 706022455 | 0 |
| 42.21.12.56 | 706022456 | 0 |
| 42.21.12.57 | 706022457 | 0 |
| 42.21.12.58 | 706022458 | 0 |
| 42.21.12.59 | 706022459 | 0 |
| 42.21.12.60 | 706022460 | 0 |
| 42.21.12.61 | 706022461 | 0 |
| 42.21.12.62 | 706022462 | 0 |
| 42.21.12.63 | 706022463 | 0 |
| 42.21.12.64 | 706022464 | 0 |
| 42.21.12.65 | 706022465 | 0 |
| 42.21.12.66 | 706022466 | 0 |
| 42.21.12.67 | 706022467 | 0 |
| 42.21.12.68 | 706022468 | 0 |
| 42.21.12.69 | 706022469 | 0 |
| 42.21.12.70 | 706022470 | 0 |
| 42.21.12.71 | 706022471 | 0 |
| 42.21.12.72 | 706022472 | 0 |
| 42.21.12.73 | 706022473 | 0 |
| 42.21.12.74 | 706022474 | 0 |
| 42.21.12.75 | 706022475 | 0 |
| 42.21.12.76 | 706022476 | 0 |
| 42.21.12.77 | 706022477 | 0 |
| 42.21.12.78 | 706022478 | 0 |
| 42.21.12.79 | 706022479 | 0 |
| 42.21.12.80 | 706022480 | 0 |
| 42.21.12.81 | 706022481 | 0 |
| 42.21.12.82 | 706022482 | 0 |
| 42.21.12.83 | 706022483 | 0 |
| 42.21.12.84 | 706022484 | 0 |
| 42.21.12.85 | 706022485 | 0 |