Data as of Nov 15, 2026

203.4.164.0/22

1 residential-proxy exit · 30 days

Peter MacCallum Cancer Institute · space held by Peter MacCallum Cancer Centre

Announcement

this exact prefix

RPKI valid

Announced by

AS149872

Type

Business

Residential-proxy exits

Proxy exits

0.10% of its addresses · 30 days

Spread

1 of 4

/24s with at least one exit

Providers

selling exits here

Oct 16, 2026 – Nov 14, 2026

Exits seen per day

21 observations

Proxy providers listing exits

AnyIP
FloppyData
KocerRoxy
LemonBright
Proxiware

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Proxy exits	Holder
203.4.164.0/24 since Nov 2022	AS149872	Business		Peter MacCallum Cancer Centre
203.4.165.0/24 since Nov 2022	AS149872	Business		Peter MacCallum Cancer Centre
203.4.166.0/24 since Nov 2022	AS149872	Business	1	Peter MacCallum Cancer Centre
203.4.167.0/24 since Oct 2022	AS149872	Business		Peter MacCallum Cancer Centre

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern: Reactivated
First seen: May 2005
Current origin since: Sep 2022 · 4.1 yr
Origin networks: 2
Last change of origin: Sep 2022

Recorded history

History

Handoffs: 1

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
203.4.164.0/22	AS149872	/22	APNIC	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS149872	APNIC	Peter MacCallum Cancer Institute	MAINT-PMCI-AU	Apr 14, 2025
AS149872	RADB	Peter MacCallum Cancer Centre	MAINT-ASAARNET	Nov 13, 2023