ResearchRouting table, looking glass, RPKI & IRR

147.72.252.0/22 Software Engineering Institute

Announced by AS36407 Software Engineering Institute. RPKI valid Seen by 5 of our 5 looking glass sessions. Also originated by AS9

Summary

What the table says about 147.72.252.0/22

Prefix

Origin

RPKI

RPKI valid

Size

1,024 addresses

Less specific

none

More specifics

IRR route objects

2 exact, 2 covering

In RouteViews

2026-10-12 12:02 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 5050×2 36407

Origin	AS36407 Software Engineering Institute
Origin code	IGP
Communities	174:21001 174:22013 36601:150 36601:174 36601:2001
Updated	4d 11h ago

AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 5050×3 36407

Origin	AS36407 Software Engineering Institute
Origin code	IGP
Communities	903:900 903:13760
Updated	4d 19h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 399855 9

Origin	AS9 Carnegie Mellon University
Origin code	IGP
Communities	36295:100
Updated	4d 19h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 399855 9

Origin	AS9 Carnegie Mellon University
Origin code	IGP
Communities	none
Updated	4d 19h ago

AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 5050×2 36407

Origin	AS36407 Software Engineering Institute
Origin code	IGP
Communities	174:21001 174:22013 36295:100 36295:174
Updated	8d 13h ago

RPKI

Covered by a ROA authorizing AS36407 to originate 147.72.252.0/22 up to /24. Validate another origin.

ROA prefix	Max length	Authorized origin	Trust anchor
147.72.252.0/22	/24	AS9 CMU-ROUTER	ARIN
147.72.252.0/22	/24	AS36407 CERT	ARIN
147.72.0.0/16	/16	AS5050 PSC-EXT	ARIN

IRR

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

Route	Origin	Source	Description	Maintained by
147.72.252.0/22	AS9 CMU-ROUTER	ARIN	PSC-BLK72-252-22	MNT-PSC-Z
147.72.252.0/22	AS36407 CERT	ARIN	CERT-NET-147-72-252-22	MNT-PSC-Z
147.72.0.0/16 covering	AS5050 PSC-EXT	ARIN	PSC Commodity Customer Block Pittsburgh Supercomputing Center 4400 Fifth Avenue Pittsburgh, PA 15213	MNT-PSC-Z
147.72.0.0/16 covering	AS5050 PSC-EXT	RADB	PSC Commodity Customer Block Pittsburgh Supercomputing Center 300 South Craig Street Pittsburgh, PA 15213	MAINT-AS5050

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