AS5723

Name: AS5723 — Johns Hopkins University
Creator: ipdex

Johns Hopkins University Unknown registered in United States

8IPv4 prefixes

1IPv6 prefixes

100%RPKI-valid

#14,145AS Rank

327/327RIS visibility

#3,482Rank in United States

1995-09-06Allocated

Johns Hopkins University (AS5723) — Unknown, registered in United States. announces 8 IPv4 prefixes + 1 IPv6 prefixes. Rank in United States: #3482. Allocated: 1995-09-06.

IPv4 8IPv6 1

Announced prefixes · 9

v4 128.220.0.0/16 valid
v4 162.129.0.0/16 valid
v4 192.12.13.0/24 valid
v4 192.12.14.0/24 valid
v4 198.57.32.0/21 valid
v4 198.57.39.0/24 valid
v4 198.57.40.0/22 valid
v4 204.124.184.0/22 valid
v6 2606:2b00::/32 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 8 IPv4 · 1 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	9
2026-06-13	9

AS topology · Customer cone 1

Providers · 6

AS3356 Level 3 Parent, LLC
AS174 Cogent Communications, LLC
AS6939 Hurricane Electric LLC
AS10886 University of Maryland
AS11096 FloridaNet
AS396450 INTERNET2-2

Peers · 1

AS77 Johns Hopkins University Applied Physics Laboratory

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