204.194.28.0/22 - bgp.tools

204.194.28.0/22

Originated by AS9
AS Name: Carnegie Mellon University

Overview
Connectivity
Whois
Validation

Registered on: 2 Dec 1994 (31 years old)

Registered to: ARIN-CARNEG-Z (arin)

Prefix status: Active, Allocated under ARIN

Size of prefix: 4 /24's

Upstreams

AS46887 - Crown Castle Fiber LLC
AS6461 - Zayo Bandwidth

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS46887	Crown Castle Fiber LLC
	AS6461	Zayo Bandwidth

Peers

	ASN	Description
	AS5050	Pittsburgh Supercomputing Center
	AS399855	Keystone REN, LLC
	AS46887	Crown Castle Fiber LLC
	AS6461	Zayo Bandwidth

Last Update: 2026-03-07T03:29:04Z UTC

IRR Databases

IRR	Expected ASN
radb	AS17054	Show Raw route: 204.194.28.0/22 descr: RR-RC-Expedient-MOH origin: AS17054 notify: publicipaddressing@charter.com mnt-by: MAINT-RR changed: publicipaddressing@charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:01Z
altdb	AS9	Show Raw route: 204.194.28.0/22 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS9 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007@gmail.com 20220404 # /!\ AltDB doesnt validate this source: ALTDB
radb	AS9	Show Raw route: 204.194.28.0/22 descr: CMU-DOTCOM origin: AS9 notify: radb-dist@3rox.net remarks: This route object has been registered by Three Rivers Optical Exchange (3ROX) on behalf of one of its members. mnt-by: MAINT-AS5050 changed: lambert@psc.edu 20240628 source: RADB last-modified: 2025-07-30T15:29:24Z

IRR

Expected ASN

radb

AS17054

Matches IRR source, but under a different ASN

Show Raw

route:          204.194.28.0/22
descr:          RR-RC-Expedient-MOH
origin:         AS17054
notify:         publicipaddressing@charter.com
mnt-by:         MAINT-RR
changed:        publicipaddressing@charter.com 20181017  #22:02:30Z
source:         RADB
last-modified:  2023-11-13T16:15:01Z

altdb

AS9

Show Raw

route:      204.194.28.0/22
descr:      Proxy registration to prevent harm from ARIN-NONAUTH shutdown
origin:     AS9
mnt-by:     MAINT-AS7034
changed:    kennethfinnegan2007@gmail.com 20220404 # /!\ AltDB doesnt validate this
source:     ALTDB

radb

AS9

Show Raw

route:          204.194.28.0/22
descr:          CMU-DOTCOM
origin:         AS9
notify:         radb-dist@3rox.net
remarks:        This route object has been registered by Three Rivers
                Optical Exchange (3ROX) on behalf of one of its members.
mnt-by:         MAINT-AS5050
changed:        lambert@psc.edu 20240628
source:         RADB
last-modified:  2025-07-30T15:29:24Z

View

Upstreams

Upstreams

Peers

IRR Databases