121.138.156.0/24
🇰🇷CIDR
121.138.156.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇰🇷 South Korea
City
Seocho (Seocho-dong)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.138.156.0/24 | AS9273SICC-AS-KR - ITCENENTEC CO.,LTD. | No ROA | — | 6/1/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.128.0.0/11 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 6/1/2026 |
| 121.128.0.0/12 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 6/1/2026 |
| 121.136.0.0/13 | AS4766KIXS-AS-KR-KR - Korea Telecom | No ROA | — | 6/1/2026 |
Origin ASN
AS9273
SICC-AS-KR - ITCENENTEC CO.,LTD.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.138.156.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.138.156.0/24" | jq
External Links