ResearchRouting table, looking glass, RPKI & IRR

128.220.0.0/16 Johns Hopkins University

Announced by AS5723 Johns Hopkins University. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 128.220.0.0/16

Prefix
128.220.0.0/16
Origin
AS5723 JHU
RPKI
RPKI valid
Size
65,536 addresses
Less specific
none
More specifics
0
IRR route objects
4 exact, 0 covering
In RouteViews
2026-10-14 00:02 UTC
Paths

How 128.220.0.0/16 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 5723
OriginAS5723 Johns Hopkins University
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:174 36601:2001
Updated6d 0h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 6939 5723
OriginAS5723 Johns Hopkins University
Origin codeIGP
Communities903:900 903:13760
Updated6d 9h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 5723
OriginAS5723 Johns Hopkins University
Origin codeIGP
Communities36295:100
Updated6d 9h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 5723
OriginAS5723 Johns Hopkins University
Origin codeIGP
Communities174:21001 174:22013
Updated6d 9h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 5723
OriginAS5723 Johns Hopkins University
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated10d 2h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS5723 to originate 128.220.0.0/16 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
128.220.0.0/16/24AS5723 JHUARIN
128.220.0.0/16/24AS198949 RadwareARIN
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
128.220.0.0/16AS5723 JHUARINJHU 128.220.0.0/16 Hopkins Information Technology Services 3400 North Charles Street Garland Hall, Suite 020 Baltimore MD 21218 United StatesMNT-JHU-Z
128.220.0.0/16AS198949 RadwareARINHopkins Information Technology Services 3400 North Charles Street Garland Hall, Suite 020 Baltimore MD 21218 United StatesMNT-JHU-Z
128.220.0.0/16AS5723 JHURADBProxy-registered route object for NOAA N-WaveMAINT-AS10886
128.220.0.0/16AS198949 RadwareRADBMAX_JHUMAINT-AS198949
Tools

Check 128.220.0.0/16 live

Looking glassIP to ASN APIRPKI APIIRR API