ResearchRouting table, looking glass, RPKI & IRR

205.201.64.0/18 Optimum

Announced by AS19108 Optimum. RPKI not found Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 205.201.64.0/18

Prefix
205.201.64.0/18
Origin
AS19108 SUDDENLINK-COMMUNICATIONS
RPKI
RPKI not found
Size
16,384 addresses
Less specific
none
More specifics
17
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-12 08:02 UTC
Paths

How 205.201.64.0/18 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 13760 19108
OriginAS19108 Optimum
Origin codeIGP
Communities13760:3109 36601:150 36601:2001 36601:13760
Updated4d 9h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 19108
OriginAS19108 Optimum
Origin codeIGP
Communities903:900 903:13760
Updated4d 17h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 19108
OriginAS19108 Optimum
Origin codeIGP
Communities36295:100
Updated4d 17h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 19108
OriginAS19108 Optimum
Origin codeIGP
Communitiesnone
Updated4d 17h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 19108
OriginAS19108 Optimum
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated8d 10h 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
205.201.64.0/18AS19108 SUDDENLINK-COMMUNICATIONSRADBSuddenlink CommunicationsMAINT-AS19108
More specific

Prefixes inside 205.201.64.0/18

17 announced prefixes fall inside this one.

Show the 17 prefixes
205.201.64.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.65.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.66.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.67.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.68.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.69.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.72.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.83.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.93.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.100.0/24 AS401873 STM-014205.201.107.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.113.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.114.0/23 AS19108 SUDDENLINK-COMMUNICATIONS205.201.116.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.122.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.123.0/24 AS19108 SUDDENLINK-COMMUNICATIONS205.201.126.0/24 AS19108 SUDDENLINK-COMMUNICATIONS
Tools

Check 205.201.64.0/18 live

Looking glassIP to ASN APIRPKI APIIRR API