ResearchRouting table, looking glass, RPKI & IRR

165.112.252.0/23 National Institutes of Health

Announced by AS30387 National Institutes of Health. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 165.112.252.0/23

Prefix
165.112.252.0/23
Origin
AS30387 NIH-NET-NCCS
RPKI
RPKI valid
Size
512 addresses
Less specific
165.112.0.0/16 AS3527 NIH-NET
More specifics
0
IRR route objects
1 exact, 6 covering
In RouteViews
2026-10-14 08:02 UTC
Paths

How 165.112.252.0/23 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 3356 15029×3 19050 30387×4
OriginAS30387 National Institutes of Health
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated4h 28m ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 15029×3 19050 30387×4
OriginAS30387 National Institutes of Health
Origin codeIGP
Communities903:900 903:13760
Updated6d 15h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 3356 15029×3 19050 30387×4
OriginAS30387 National Institutes of Health
Origin codeIGP
Communities36295:100
Updated6d 14h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 3356 15029×3 19050 30387×4
OriginAS30387 National Institutes of Health
Origin codeIGP
Communities174:21000 174:22013
Updated6d 15h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 3356 15029×3 19050 30387×4
OriginAS30387 National Institutes of Health
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated10d 8h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS30387 to originate 165.112.252.0/23 up to /27. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
165.112.252.0/23/27AS30387 NIH-NET-NCCSARIN
165.112.0.0/16/25AS3527 NIH-NETARIN
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
165.112.252.0/23AS30387 NIH-NET-NCCSARINNational Institutes of HealthMNT-NIH-Z
165.112.128.0/17 coveringAS70 NLM-GWLEVEL3NLM.NIH.GOV maintainerNLM-MNT
165.112.128.0/17 coveringAS3527 NIH-NETLEVEL3Proxy-registered route objectLEVEL3-MNT
165.112.0.0/16 coveringAS3527 NIH-NETARIN9000 Rockville Pike MSC 4805 Bethesda MD 20892-4805 United StatesMNT-NIH-Z
165.112.0.0/16 coveringAS70 NLM-GWLEVEL3NLM.NIH.GOV maintainerNLM-MNT
165.112.0.0/16 coveringAS3527 NIH-NETLEVEL3Proxy-registered route objectLEVEL3-MNT
165.112.0.0/16 coveringAS3527 NIH-NETRADBProxy-registered route object for NIHMAINT-AS10886
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

165.112.0.0/16 AS3527 NIH-NET
Tools

Check 165.112.252.0/23 live

Looking glassIP to ASN APIRPKI APIIRR API