SEJONG NETWORKS
BGP inherited
Complete entity footprint
2 linked clusters ·
275 netblocks ·
2,537,218 IPv4 addresses
This organisation's clusters combined by evidence —
shared operating domain donghwan.co.kr
— not name similarity, so genuinely different organisations that share a name are excluded.
Cluster stats
| Netblocks | 165 · 1,088,878 IPv4 addresses |
| Registered in | South Korea (148) · United States (4) · Hong Kong (2) |
| Cluster ID | 208783742 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 3 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
165
0 netblocks since 2026-07-05
2026-07-05
peak 165
2026-07-19
IP Ranges (165)
showing 50 of 165 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 36.255.56.94/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 36.255.56.191/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 58.180.7.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 58.180.133.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 58.180.136.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.97.64.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.97.96.0/21 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.97.96.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.97.96.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.100.0.0/17 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.100.128.0/18 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.109.128.0/17 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.109.211.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.111.179.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.250.64.0/18 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.252.160.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 61.252.176.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 64.23.64.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 66.232.136.0/21 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 66.232.140.0/22 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 66.232.144.0/22 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 139.150.100.156/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 139.150.100.157/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 163.223.95.19/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 163.223.95.20/32 | Sejong Networks | PEERINGDB | ASSIGNED | ● high |
| 202.30.209.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.210.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.212.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.213.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.217.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.232.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.233.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.234.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.235.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.236.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.237.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.238.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.239.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.240.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.241.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.242.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.243.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 202.30.249.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.227.0.0/16 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.227.32.0/19 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.227.176.0/20 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.231.0.0/16 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.231.97.0/24 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.231.104.0/21 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
| 203.231.224.0/19 | SEJONG NETWORKS | BGP | ANNOUNCED | ● high |
Domains hosted in this network
what's this?Customer-delegated space
how is this classified?
Unclassified
149 (90.3%)
Operator infrastructure (named)
16 (9.7%)
Network trust
what's this?
RPKI hygiene: F
how networks compare →
2.4%
of checked blocks have valid RPKI ROA coverage
(4 of 165)
No discrepancies found among checked blocks.
NIC Handles
AS38425
AS9848
AS9848