Les adresses IP débutant par 210.121.2 sont fournies par Sejong Telecom, elles appartiennent au CIDR (Classless Inter-Domain Routing) 210.121.0.0/17, le bloc IP comprant les adresses de 210.121.0.0 à 210.121.127.255). Le numéro de système autonome (ASN) est 9848.
| ASN | 9848 |
| IP commençant par | 210.121.0.0 |
| IP se terminant par | 210.121.127.255 |
| Nom ASN | Sejong Telecom |
| CDIR | 210.121.0.0/17 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 26/07/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | KR | Corée du Sud | - | Chungju | 36,9667 | 127,95 | 2019-07-26 |
| MaxMind | KR | Corée du Sud | - | Jungpyong | 36,7847 | 127,5819 | 2019-07-26 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 210.121.2.0 | 3531145728 | 0 |
| 210.121.2.1 | 3531145729 | 0 |
| 210.121.2.2 | 3531145730 | 0 |
| 210.121.2.3 | 3531145731 | 0 |
| 210.121.2.4 | 3531145732 | 0 |
| 210.121.2.5 | 3531145733 | 0 |
| 210.121.2.6 | 3531145734 | 0 |
| 210.121.2.7 | 3531145735 | 0 |
| 210.121.2.8 | 3531145736 | 0 |
| 210.121.2.9 | 3531145737 | 0 |
| 210.121.2.10 | 3531145738 | 0 |
| 210.121.2.11 | 3531145739 | 0 |
| 210.121.2.12 | 3531145740 | 0 |
| 210.121.2.13 | 3531145741 | 0 |
| 210.121.2.14 | 3531145742 | 0 |
| 210.121.2.15 | 3531145743 | 0 |
| 210.121.2.16 | 3531145744 | 0 |
| 210.121.2.17 | 3531145745 | 0 |
| 210.121.2.18 | 3531145746 | 0 |
| 210.121.2.19 | 3531145747 | 0 |
| 210.121.2.20 | 3531145748 | 0 |
| 210.121.2.21 | 3531145749 | 0 |
| 210.121.2.22 | 3531145750 | 0 |
| 210.121.2.23 | 3531145751 | 0 |
| 210.121.2.24 | 3531145752 | 0 |
| 210.121.2.25 | 3531145753 | 0 |
| 210.121.2.26 | 3531145754 | 0 |
| 210.121.2.27 | 3531145755 | 0 |
| 210.121.2.28 | 3531145756 | 0 |
| 210.121.2.29 | 3531145757 | 0 |
| 210.121.2.30 | 3531145758 | 0 |
| 210.121.2.31 | 3531145759 | 0 |
| 210.121.2.32 | 3531145760 | 0 |
| 210.121.2.33 | 3531145761 | 0 |
| 210.121.2.34 | 3531145762 | 0 |
| 210.121.2.35 | 3531145763 | 0 |
| 210.121.2.36 | 3531145764 | 0 |
| 210.121.2.37 | 3531145765 | 0 |
| 210.121.2.38 | 3531145766 | 0 |
| 210.121.2.39 | 3531145767 | 0 |
| 210.121.2.40 | 3531145768 | 0 |
| 210.121.2.41 | 3531145769 | 0 |
| 210.121.2.42 | 3531145770 | 0 |
| 210.121.2.43 | 3531145771 | 0 |
| 210.121.2.44 | 3531145772 | 0 |
| 210.121.2.45 | 3531145773 | 0 |
| 210.121.2.46 | 3531145774 | 0 |
| 210.121.2.47 | 3531145775 | 0 |
| 210.121.2.48 | 3531145776 | 0 |
| 210.121.2.49 | 3531145777 | 0 |
| 210.121.2.50 | 3531145778 | 0 |
| 210.121.2.51 | 3531145779 | 0 |
| 210.121.2.52 | 3531145780 | 0 |
| 210.121.2.53 | 3531145781 | 0 |
| 210.121.2.54 | 3531145782 | 0 |
| 210.121.2.55 | 3531145783 | 0 |
| 210.121.2.56 | 3531145784 | 0 |
| 210.121.2.57 | 3531145785 | 0 |
| 210.121.2.58 | 3531145786 | 0 |
| 210.121.2.59 | 3531145787 | 0 |
| 210.121.2.60 | 3531145788 | 0 |
| 210.121.2.61 | 3531145789 | 0 |
| 210.121.2.62 | 3531145790 | 0 |
| 210.121.2.63 | 3531145791 | 0 |
| 210.121.2.64 | 3531145792 | 0 |
| 210.121.2.65 | 3531145793 | 0 |
| 210.121.2.66 | 3531145794 | 0 |
| 210.121.2.67 | 3531145795 | 0 |
| 210.121.2.68 | 3531145796 | 0 |
| 210.121.2.69 | 3531145797 | 0 |
| 210.121.2.70 | 3531145798 | 0 |
| 210.121.2.71 | 3531145799 | 0 |
| 210.121.2.72 | 3531145800 | 0 |
| 210.121.2.73 | 3531145801 | 0 |
| 210.121.2.74 | 3531145802 | 0 |
| 210.121.2.75 | 3531145803 | 0 |
| 210.121.2.76 | 3531145804 | 0 |
| 210.121.2.77 | 3531145805 | 0 |
| 210.121.2.78 | 3531145806 | 0 |
| 210.121.2.79 | 3531145807 | 0 |
| 210.121.2.80 | 3531145808 | 0 |
| 210.121.2.81 | 3531145809 | 0 |
| 210.121.2.82 | 3531145810 | 0 |
| 210.121.2.83 | 3531145811 | 0 |
| 210.121.2.84 | 3531145812 | 0 |
| 210.121.2.85 | 3531145813 | 0 |