ResearchRouting table, looking glass, RPKI & IRR

121.136.0.0/13 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 121.136.0.0/13

Prefix
121.136.0.0/13
Origin
AS4766 KIXS-AS-KR-KR
RPKI
RPKI not found
Size
524,288 addresses
Less specific
121.128.0.0/12 AS4766 KIXS-AS-KR-KR
More specifics
27
IRR route objects
0 exact, 2 covering
In RouteViews
2026-10-12 16:02 UTC
Paths

How 121.136.0.0/13 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
OriginAS4766 Korea Telecom
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:174 36601:2001
Updated4d 15h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 4766
OriginAS4766 Korea Telecom
Origin codeIGP
Communities903:900 903:13760
Updated5d 0h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 1299 4766×2
OriginAS4766 Korea Telecom
Origin codeIGP
Communities36295:100
Updated5d 0h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 4766
OriginAS4766 Korea Telecom
Origin codeIGP
Communities174:21001 174:22013
Updated5d 0h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 4766
OriginAS4766 Korea Telecom
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated8d 17h 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.

RouteOriginSourceDescriptionMaintained by
121.128.0.0/12 coveringAS4766 KIXS-AS-KR-KRRADBKorea TelecomMAINT-AS4766
121.128.0.0/11 coveringAS4766 KIXS-AS-KR-KRRADBKORNETMAINT-AS4766
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

121.128.0.0/12 AS4766 KIXS-AS-KR-KR121.128.0.0/11 AS4766 KIXS-AS-KR-KR
More specific

Prefixes inside 121.136.0.0/13

27 announced prefixes fall inside this one.

Show the 27 prefixes
121.137.87.0/24 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
Tools

Check 121.136.0.0/13 live

Looking glassIP to ASN APIRPKI APIIRR API