ResearchRouting table, looking glass, RPKI & IRR

128.121.64.0/18 RCN

Announced by AS6079 RCN. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 128.121.64.0/18

Prefix
128.121.64.0/18
Origin
AS6079 RCN-AS
RPKI
RPKI valid
Size
16,384 addresses
Less specific
128.121.0.0/16 AS2914 NTT-DATA-2914
More specifics
2
IRR route objects
8 exact, 1 covering
In RouteViews
2026-10-14 16:02 UTC
Paths

How 128.121.64.0/18 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 3257 6079
OriginAS6079 RCN
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated13h 3m ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 6079
OriginAS6079 RCN
Origin codeIGP
Communities903:900 903:13760
Updated6d 23h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 6079
OriginAS6079 RCN
Origin codeIGP
Communities36295:100
Updated6d 23h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 6079
OriginAS6079 RCN
Origin codeIGP
Communitiesnone
Updated6d 23h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 1299 6079
OriginAS6079 RCN
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated10d 17h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS6079 to originate 128.121.64.0/18 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
128.121.64.0/18/24AS1299 TWELVE99ARIN
128.121.64.0/18/24AS3257 GTT-BACKBONEARIN
128.121.64.0/18/24AS6079 RCN-ASARIN
128.121.64.0/18/24AS7029 WINDSTREAMARIN
128.121.64.0/18/24AS7843 TWC-7843-BBARIN
128.121.64.0/18/24AS11404 AS-WAVE-1ARIN
128.121.64.0/18/24AS20115 CHARTER-20115ARIN
128.121.64.0/18/24AS398465 RACKDOG-LLCARIN
128.121.0.0/16/16AS2914 NTT-DATA-2914ARIN
IRR

Route objects

Registered in the IRR for this prefix and the ones covering it. Look it up live.

RouteOriginSourceDescriptionMaintained by
128.121.64.0/18AS1299 TWELVE99NTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS3257 GTT-BACKBONENTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS6079 RCN-ASNTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS7029 WINDSTREAMNTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS7843 TWC-7843-BBNTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS11404 AS-WAVE-1NTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS20115 CHARTER-20115NTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.64.0/18AS398465 RACKDOG-LLCNTTCOMRackdog proxy objectMAINT-NTTCOM-BB
128.121.0.0/16 coveringAS2914 NTT-DATA-2914NTTCOMNTT NTTA-128-121MAINT-NTTCOM-BB
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

128.121.0.0/16 AS2914 NTT-DATA-2914
More specific

Prefixes inside 128.121.64.0/18

2 announced prefixes fall inside this one.

Show the 2 prefixes
128.121.64.0/19 AS7029 WINDSTREAM128.121.96.0/19 AS7029 WINDSTREAM
Tools

Check 128.121.64.0/18 live

Looking glassIP to ASN APIRPKI APIIRR API