ResearchRouting table, looking glass, RPKI & IRR

173.218.76.0/22 Optimum

Announced by AS19108 Optimum. RPKI not found Seen by 3 of our 5 looking glass sessions.

Summary

What the table says about 173.218.76.0/22

Prefix
173.218.76.0/22
Origin
AS19108 SUDDENLINK-COMMUNICATIONS
RPKI
RPKI not found
Size
1,024 addresses
Less specific
173.218.0.0/16 AS19108 SUDDENLINK-COMMUNICATIONS
More specifics
0
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-13 04:03 UTC
Paths

How 173.218.76.0/22 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.

AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 36295 6939 19108
OriginAS19108 Optimum
Origin codeIGP
Communities903:100 903:900
Updated5d 10h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 19108
OriginAS19108 Optimum
Origin codeIGP
Communities36295:100
Updated5d 10h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 19108
OriginAS19108 Optimum
Origin codeIGP
Communitiesnone
Updated5d 11h 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
173.216.0.0/14 coveringAS19108 SUDDENLINK-COMMUNICATIONSRADBSuddenlink CommunicationsMAINT-AS19108
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

173.218.0.0/16 AS19108 SUDDENLINK-COMMUNICATIONS
Tools

Check 173.218.76.0/22 live

Looking glassIP to ASN APIRPKI APIIRR API