ResearchRouting table, looking glass, RPKI & IRR

50.168.21.0/24 UNIVERSAL HEALTH SERVICES

Announced by AS400973 UNIVERSAL HEALTH SERVICES. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 50.168.21.0/24

Prefix
50.168.21.0/24
Origin
AS400973 AIK-159
RPKI
RPKI valid
Size
256 addresses
Less specific
50.128.0.0/9 AS7922 COMCAST-7922
More specifics
0
IRR route objects
1 exact, 1 covering
In RouteViews
2026-10-16 12:01 UTC
Paths

How 50.168.21.0/24 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 400973
OriginAS400973 UNIVERSAL HEALTH SERVICES
Origin codeincomplete
Communities13760:2006 36601:150 36601:2001 36601:13760
Updated2d 7h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 400973
OriginAS400973 UNIVERSAL HEALTH SERVICES
Origin codeincomplete
Communities903:900 903:13760
Updated8d 18h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 13760 400973
OriginAS400973 UNIVERSAL HEALTH SERVICES
Origin codeIGP
Communities36295:100
Updated8d 18h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 13760 400973
OriginAS400973 UNIVERSAL HEALTH SERVICES
Origin codeIGP
Communitiesnone
Updated8d 18h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 3356 13760 400973
OriginAS400973 UNIVERSAL HEALTH SERVICES
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated12d 11h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS400973 to originate 50.168.21.0/24 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
50.168.21.0/24/24AS400973 AIK-159ARIN
50.128.0.0/9/9AS7922 COMCAST-7922ARIN
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
50.168.21.0/24AS400973 AIK-159RADBUnited healthcare servicesMAINT-AS13760
50.128.0.0/9 coveringAS7922 COMCAST-7922RADBComcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054MAINT-AS7922
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

50.128.0.0/9 AS7922 COMCAST-7922
Tools

Check 50.168.21.0/24 live

Looking glassIP to ASN APIRPKI APIIRR API