121.128.0.0/12 Korea Telecom
Announced by AS4766 Korea Telecom. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 121.128.0.0/12
Prefix
Origin
AS4766 KIXS-AS-KR-KR
RPKI
RPKI not found
Size
1,048,576 addresses
Less specific
More specifics
57
IRR route objects
1 exact, 1 covering
In RouteViews
2026-10-13 20:02 UTC
Paths
How 121.128.0.0/12 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 4766
| Origin | AS4766 Korea Telecom |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 17h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 4766
| Origin | AS4766 Korea Telecom |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 2h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 4766
| Origin | AS4766 Korea Telecom |
| Origin code | IGP |
| Communities | 6461:5997 36295:100 36295:6461 |
| Updated | 8h 1m ago |
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 121.128.0.0/12 | AS4766 KIXS-AS-KR-KR | RADB | Korea Telecom | MAINT-AS4766 |
| 121.128.0.0/11 covering | AS4766 KIXS-AS-KR-KR | RADB | KORNET | MAINT-AS4766 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.
More specific
Prefixes inside 121.128.0.0/12
57 announced prefixes fall inside this one.
Show the 57 prefixes
121.128.0.0/13 AS4766 KIXS-AS-KR-KR121.128.28.0/24 AS4790 CHOSUN-AS-KR-KR121.128.29.0/24 AS4790 CHOSUN-AS-KR-KR121.128.55.0/24 AS9647 SEOULMETRO-AS-KR121.128.97.0/24 AS152214 KOREANAIRLINES-AS-KR-KR121.128.166.0/24 AS4790 CHOSUN-AS-KR-KR121.128.219.0/24 AS9647 SEOULMETRO-AS-KR121.128.224.0/24 AS38122 SGIC-AS-KR-KR121.128.225.0/24 AS38122 SGIC-AS-KR-KR121.129.49.0/24 AS9776 KBSTAR-KR121.130.46.0/24 AS9684 HANWHA-AS-KR121.130.47.0/24 AS9684 HANWHA-AS-KR121.131.7.0/24 AS10040 NICEVAN-AS-KR-KR121.131.145.0/24 AS38126 SCI-AS-KR-KR121.131.216.0/24 AS152214 KOREANAIRLINES-AS-KR-KR121.131.217.0/24 AS9856 WOORIWM-AS-KR-KR121.133.126.0/24 AS45401 NICEVAN02-AS-KR-KR121.133.198.0/24 AS38394 GOESN-AS-KR-KR121.133.199.0/24 AS38395 GOE-AS-KR-KR121.133.203.0/24 AS38399 GOEYJ-AS-KR-KR121.133.209.0/24 AS38412 GOEIC-AS-KR-KR121.134.234.0/24 AS18333 ATNET-AS-KR-KR121.135.53.0/24 AS38697 MOK9882-AS-KR-KR121.135.54.0/24 AS38697 MOK9882-AS-KR-KR121.135.55.0/24 AS38697 MOK9882-AS-KR-KR121.135.56.0/24 AS38697 MOK9882-AS-KR-KR121.135.147.0/24 AS46002 PHIS-AS-KR-KR121.135.148.0/24 AS46002 PHIS-AS-KR-KR121.135.246.0/24 AS9696 EDAS-AS-KR121.136.0.0/13 AS4766 KIXS-AS-KR-KR121.137.87.0/24 AS46009 YABESK-AS-KR-KR121.137.88.0/24 AS46009 YABESK-AS-KR-KR121.137.89.0/24 AS46009 YABESK-AS-KR-KR121.137.90.0/24 AS46009 YABESK-AS-KR-KR121.137.94.0/24 AS46009 YABESK-AS-KR-KR121.137.95.0/24 AS46009 YABESK-AS-KR-KR121.137.96.0/24 AS46009 YABESK-AS-KR-KR121.137.105.0/24 AS46009 YABESK-AS-KR-KR121.137.106.0/24 AS46009 YABESK-AS-KR-KR121.137.107.0/24 AS46009 YABESK-AS-KR-KR121.137.151.0/24 AS4766 KIXS-AS-KR-KR121.137.185.0/24 AS4766 KIXS-AS-KR-KR121.138.29.0/24 AS55630 KSNET-AS-KR-KR121.138.30.0/24 AS55630 KSNET-AS-KR-KR121.138.156.0/24 AS9273 SICC-AS-KR121.139.137.0/24 AS23591 LS-AS-KR-KR121.140.50.0/24 AS55592 KDT-AS-KR-KR121.140.76.0/24 AS9524 HMC-AS-KR121.140.97.0/24 AS9530 SHINSEGAE-AS-KR121.140.104.0/24 AS55592 KDT-AS-KR-KR121.140.118.0/24 AS55592 KDT-AS-KR-KR121.140.137.0/24 AS55592 KDT-AS-KR-KR121.141.42.0/24 AS4766 KIXS-AS-KR-KR121.141.60.0/24 AS9526 KOSCOM-AS-KR-KR121.141.101.0/24 AS9776 KBSTAR-KR121.141.229.0/24 AS9526 KOSCOM-AS-KR-KR121.143.242.0/24 AS9968 KYOBO-AS-KR