La dirección IP 121.128.3 es proporcionada por Korea Telecom, que es propiedad de la CIDR (Classless Inter-Domain Routing) 121.128.0.0/11, IP entre 121.128.0.0 a 121.159.255.255 ). El número de sistema autónomo (ASN) es 4766.
| ASN | 4766 |
| IP que comienzan con | 121.128.0.0 |
| IP que termina con | 121.159.255.255 |
| ASN Nombre | Korea Telecom |
| CDIR | 121.128.0.0/11 |
| IP numérica | |
| Registe | apnic |
| Última actualización | 05/11/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | KR | Korea, Republic of | - | Seoul | 37,5683 | 126,9778 | 2017-11-05 |
| MaxMind | KR | Corea del Sur | - | - | 37,6027 | 127,0145 | 2017-11-05 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.128.3.0 | 2038432512 | 0 |
| 121.128.3.1 | 2038432513 | 0 |
| 121.128.3.2 | 2038432514 | 0 |
| 121.128.3.3 | 2038432515 | 0 |
| 121.128.3.4 | 2038432516 | 0 |
| 121.128.3.5 | 2038432517 | 0 |
| 121.128.3.6 | 2038432518 | 0 |
| 121.128.3.7 | 2038432519 | 0 |
| 121.128.3.8 | 2038432520 | 0 |
| 121.128.3.9 | 2038432521 | 0 |
| 121.128.3.10 | 2038432522 | 0 |
| 121.128.3.11 | 2038432523 | 0 |
| 121.128.3.12 | 2038432524 | 0 |
| 121.128.3.13 | 2038432525 | 0 |
| 121.128.3.14 | 2038432526 | 0 |
| 121.128.3.15 | 2038432527 | 0 |
| 121.128.3.16 | 2038432528 | 0 |
| 121.128.3.17 | 2038432529 | 0 |
| 121.128.3.18 | 2038432530 | 0 |
| 121.128.3.19 | 2038432531 | 0 |
| 121.128.3.20 | 2038432532 | 0 |
| 121.128.3.21 | 2038432533 | 0 |
| 121.128.3.22 | 2038432534 | 0 |
| 121.128.3.23 | 2038432535 | 0 |
| 121.128.3.24 | 2038432536 | 0 |
| 121.128.3.25 | 2038432537 | 0 |
| 121.128.3.26 | 2038432538 | 0 |
| 121.128.3.27 | 2038432539 | 0 |
| 121.128.3.28 | 2038432540 | 0 |
| 121.128.3.29 | 2038432541 | 0 |
| 121.128.3.30 | 2038432542 | 0 |
| 121.128.3.31 | 2038432543 | 0 |
| 121.128.3.32 | 2038432544 | 0 |
| 121.128.3.33 | 2038432545 | 0 |
| 121.128.3.34 | 2038432546 | 0 |
| 121.128.3.35 | 2038432547 | 0 |
| 121.128.3.36 | 2038432548 | 0 |
| 121.128.3.37 | 2038432549 | 0 |
| 121.128.3.38 | 2038432550 | 0 |
| 121.128.3.39 | 2038432551 | 0 |
| 121.128.3.40 | 2038432552 | 0 |
| 121.128.3.41 | 2038432553 | 0 |
| 121.128.3.42 | 2038432554 | 0 |
| 121.128.3.43 | 2038432555 | 0 |
| 121.128.3.44 | 2038432556 | 0 |
| 121.128.3.45 | 2038432557 | 0 |
| 121.128.3.46 | 2038432558 | 0 |
| 121.128.3.47 | 2038432559 | 0 |
| 121.128.3.48 | 2038432560 | 0 |
| 121.128.3.49 | 2038432561 | 0 |
| 121.128.3.50 | 2038432562 | 0 |
| 121.128.3.51 | 2038432563 | 0 |
| 121.128.3.52 | 2038432564 | 0 |
| 121.128.3.53 | 2038432565 | 0 |
| 121.128.3.54 | 2038432566 | 0 |
| 121.128.3.55 | 2038432567 | 0 |
| 121.128.3.56 | 2038432568 | 0 |
| 121.128.3.57 | 2038432569 | 0 |
| 121.128.3.58 | 2038432570 | 0 |
| 121.128.3.59 | 2038432571 | 0 |
| 121.128.3.60 | 2038432572 | 0 |
| 121.128.3.61 | 2038432573 | 0 |
| 121.128.3.62 | 2038432574 | 0 |
| 121.128.3.63 | 2038432575 | 0 |
| 121.128.3.64 | 2038432576 | 0 |
| 121.128.3.65 | 2038432577 | 0 |
| 121.128.3.66 | 2038432578 | 0 |
| 121.128.3.67 | 2038432579 | 0 |
| 121.128.3.68 | 2038432580 | 0 |
| 121.128.3.69 | 2038432581 | 0 |
| 121.128.3.70 | 2038432582 | 0 |
| 121.128.3.71 | 2038432583 | 0 |
| 121.128.3.72 | 2038432584 | 0 |
| 121.128.3.73 | 2038432585 | 0 |
| 121.128.3.74 | 2038432586 | 0 |
| 121.128.3.75 | 2038432587 | 0 |
| 121.128.3.76 | 2038432588 | 0 |
| 121.128.3.77 | 2038432589 | 0 |
| 121.128.3.78 | 2038432590 | 0 |
| 121.128.3.79 | 2038432591 | 0 |
| 121.128.3.80 | 2038432592 | 0 |
| 121.128.3.81 | 2038432593 | 0 |
| 121.128.3.82 | 2038432594 | 0 |
| 121.128.3.83 | 2038432595 | 0 |
| 121.128.3.84 | 2038432596 | 0 |
| 121.128.3.85 | 2038432597 | 0 |