ResearchRouting table, looking glass, RPKI & IRR

203.237.128.0/17 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 203.237.128.0/17

Prefix
203.237.128.0/17
Origin
AS4766 KIXS-AS-KR-KR
RPKI
RPKI not found
Size
32,768 addresses
Less specific
none
More specifics
71
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-15 16:02 UTC
Paths

How 203.237.128.0/17 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
Updated7d 14h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 4766
OriginAS4766 Korea Telecom
Origin codeIGP
Communities903:900 903:13760
Updated7d 22h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 4766
OriginAS4766 Korea Telecom
Origin codeIGP
Communities6461:5997 36295:100 36295:6461
Updated1d 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
Updated7d 22h 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
Updated11d 15h 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
203.237.128.0/17AS3786 LGDACOM-KRRADBcontact noc@bora.net if necessary contact noc@bora.net if necessaryMAINT-AS3786
203.237.128.0/17AS4766 KIXS-AS-KR-KRRADBKORnet operation CenterMAINT-AS4766
More specific

Prefixes inside 203.237.128.0/17

71 announced prefixes fall inside this one.

Show the 71 prefixes
203.237.128.0/19 AS3786 LGDACOM-KR203.237.128.0/20 AS23983 DJU-AS-KR-KR203.237.144.0/21 AS23983 DJU-AS-KR-KR203.237.152.0/23 AS23983 DJU-AS-KR-KR203.237.154.0/24 AS4766 KIXS-AS-KR-KR203.237.156.0/24 AS4766 KIXS-AS-KR-KR203.237.157.0/24 AS4766 KIXS-AS-KR-KR203.237.158.0/24 AS4766 KIXS-AS-KR-KR203.237.159.0/24 AS4766 KIXS-AS-KR-KR203.237.160.0/24 AS3786 LGDACOM-KR203.237.161.0/24 AS3786 LGDACOM-KR203.237.162.0/24 AS3786 LGDACOM-KR203.237.163.0/24 AS3786 LGDACOM-KR203.237.164.0/24 AS3786 LGDACOM-KR203.237.165.0/24 AS3786 LGDACOM-KR203.237.166.0/24 AS3786 LGDACOM-KR203.237.167.0/24 AS3786 LGDACOM-KR203.237.168.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.169.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.170.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.171.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.172.0/23 AS3786 LGDACOM-KR203.237.172.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.173.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.174.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.175.0/24 AS18031 SANGMYUNG-AS-KR-KR203.237.176.0/21 AS18329 SMUC-AS-KR-KR203.237.184.0/22 AS17614 GEUMGANG-AS-KR-KR203.237.188.0/23 AS18319 YJNET-AS-KR-KR203.237.190.0/24 AS9318 SKB-AS-KR203.237.191.0/24 AS4766 KIXS-AS-KR-KR203.237.192.0/21 AS4766 KIXS-AS-KR-KR203.237.200.0/24 AS4766 KIXS-AS-KR-KR203.237.201.0/24 AS18329 SMUC-AS-KR-KR203.237.202.0/23 AS18026 CHEJU-AS-KR-KR203.237.204.0/24 AS4766 KIXS-AS-KR-KR203.237.205.0/24 AS4766 KIXS-AS-KR-KR203.237.206.0/24 AS4766 KIXS-AS-KR-KR203.237.207.0/24 AS4766 KIXS-AS-KR-KR203.237.208.0/24 AS4766 KIXS-AS-KR-KR203.237.209.0/24 AS4766 KIXS-AS-KR-KR203.237.210.0/24 AS4766 KIXS-AS-KR-KR203.237.211.0/24 AS4766 KIXS-AS-KR-KR203.237.212.0/24 AS4766 KIXS-AS-KR-KR203.237.213.0/24 AS4766 KIXS-AS-KR-KR203.237.214.0/24 AS4766 KIXS-AS-KR-KR203.237.215.0/24 AS4766 KIXS-AS-KR-KR203.237.216.0/24 AS9318 SKB-AS-KR203.237.217.0/24 AS9318 SKB-AS-KR203.237.218.0/24 AS9318 SKB-AS-KR203.237.219.0/24 AS9318 SKB-AS-KR203.237.220.0/24 AS9318 SKB-AS-KR203.237.221.0/24 AS9318 SKB-AS-KR203.237.222.0/24 AS9318 SKB-AS-KR203.237.223.0/24 AS9318 SKB-AS-KR203.237.224.0/24 AS4766 KIXS-AS-KR-KR203.237.225.0/24 AS4766 KIXS-AS-KR-KR203.237.226.0/24 AS9318 SKB-AS-KR203.237.227.0/24 AS4766 KIXS-AS-KR-KR203.237.228.0/24 AS4766 KIXS-AS-KR-KR203.237.229.0/24 AS4766 KIXS-AS-KR-KR203.237.230.0/24 AS4766 KIXS-AS-KR-KR203.237.231.0/24 AS4766 KIXS-AS-KR-KR203.237.232.0/21 AS4766 KIXS-AS-KR-KR203.237.240.0/21 AS9318 SKB-AS-KR203.237.248.0/24 AS18329 SMUC-AS-KR-KR203.237.249.0/24 AS18329 SMUC-AS-KR-KR203.237.250.0/24 AS4766 KIXS-AS-KR-KR203.237.251.0/24 AS23586 KCUE-AS-KR-KR203.237.254.0/24 AS38694 CJE-AS-KR-KR203.237.255.0/24 AS38694 CJE-AS-KR-KR
Tools

Check 203.237.128.0/17 live

Looking glassIP to ASN APIRPKI APIIRR API