ResearchRouting table, looking glass, RPKI & IRR

185.33.184.0/23 SysGroup plc

Announced by AS51491 SysGroup plc. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 185.33.184.0/23

Prefix

Origin

AS51491 SYSGROUP-WALES

RPKI

RPKI valid

Size

512 addresses

Less specific

none

More specifics

IRR route objects

2 exact, 1 covering

In RouteViews

2026-10-16 04:02 UTC

Paths

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 39537 51491

AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 39537 51491

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 39537 51491

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 39537 51491

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 39537 51491

RPKI

Covered by a ROA authorizing AS51491 to originate 185.33.184.0/22 up to /24. Validate another origin.

ROA prefix	Max length	Authorized origin	Trust anchor
185.33.184.0/22	/24	AS20860 IOMART-AS	RIPE
185.33.184.0/22	/24	AS39537 HNS	RIPE
185.33.184.0/22	/24	AS51491 SYSGROUP-WALES	RIPE

IRR

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

Route	Origin	Source	Description	Maintained by
185.33.184.0/23	AS39537 HNS	RIPE	Route not advertised, DDoS mitigation only	SYSGROUP-API-MNT, SYSGROUP-MNT
185.33.184.0/23	AS51491 SYSGROUP-WALES	RIPE	N	SYSGROUP-MNT
185.33.184.0/22 covering	AS39537 HNS	RIPE	Route not advertised, DDoS mitigation only	SYSGROUP-API-MNT, SYSGROUP-MNT

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