Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Long-established allocation (30y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 203.231.104.0/21
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 203.231.108.0/22 | 1.0K | SEJONG NETWORKS | AS9848 | KR |
| 203.231.104.0/23 | 512 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.110.0/23 | 512 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.104.0/23 | 512 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.106.0/24 | 256 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.107.0/24 | 256 | Enjoyvc Cloud Group Limited. | AS136897 | KR |
| 203.231.106.0/24 | 256 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.108.0/24 | 256 | SEJONG NETWORKS | AS9848 | KR |
| 203.231.109.0/24 | 256 | Zenlayer Inc | AS21859 | KR |
| 203.231.107.0/24 | 256 | Enjoyvc Cloud Group Limited. | AS136897 | KR |
Geolocation
First and last addresses in 203.231.104.0/21
203.231.104.0/21 runs from 203.231.104.0 to 203.231.111.255.
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
RIR Ownership History
Atom feed ⇲Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | KR |
Frequently Asked Questions
What is 203.231.104.0/21?
203.231.104.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 203.231.104.0 to 203.231.111.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 203.231.104.0/21 network?
The 203.231.104.0/21 range is allocated to an unknown organization from South Korea.
