Data as of Nov 15, 2026

203.61.0.0/16

No anonymizer space · no proxy exits in 30 days

Verizon Business · space held by Verizon Australia Pty Limited

Announcement

this exact prefix

No RPKI

Announced by

AS703

Type

Internet provider

98% of it

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
203.61.224.0/20 since Oct 2006	AS703	Internet provider	Verizon Australia Pty Limited

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
203.61.0.0/16	65,536	VzB-AU-NETBLOCK	Verizon Australia Pty Limited (ORG-VAPL3-AP) · AU	ALLOCATED PORTABLE	—	abuse.apac@verizon.com
└ 203.61.116.40/29	8	BENFIELD-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VzB-AU-NETBLOCK
└ 203.61.116.240/29	8	INTREPID-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VzB-AU-NETBLOCK
└ 203.61.118.80/28	16	MT-MT	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VzB-AU-NETBLOCK
└ 203.61.121.0 - 203.61.122.255	512	VZDSL-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VzB-AU-NETBLOCK
└ 203.61.121.40/29	8	UU-203-61-121-40	Nilsen Morwell	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.121.160/28	16	RICHMOND-AU	RICHMOND TWEED REG Library	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.121.176/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.121.192/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.121.208/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.121.240/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.122.0/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.122.16/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU
└ 203.61.122.32/28	16	RICHMOND-AU	UUNET Non-Portable Customer Assignment	ASSIGNED NON-PORTABLE	—	abuse.apac@verizon.com via VZDSL-AU

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses

Type	Addresses	Share	Ranges
Internet provider	64,240	98%	6
Residential	1,128	1.7%	9
Business	168	0.26%	12

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern: Stable
First seen: May 2005
Current origin since: May 2005 · 22 yr
Origin networks: 1

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS703	RADB	Proxy route	MAINT-AS7545	Nov 13, 2023

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
203.61.65.0/24	AS17486	RADB	UUNET AU Non-Portable Customer Assignment (134162)	MAINT-AS2764	Nov 13, 2023
203.61.96.0/24	AS45315	RADB	PT. Jaring Semesta Infosolusi - Indosat Customer	MAINT-AS4761	Nov 13, 2023
203.61.138.0/24	AS4805	RADB	Proxy route object registered by AS2764	MAINT-AS2764	Nov 13, 2023
203.61.170.0/24	AS7545	RADB	Proxy route object registered by AS2764	MAINT-AS2764	Nov 13, 2023
203.61.170.0/24	AS55736	RADB	Verizon Australia PTY Limited (139763)	MAINT-AS2764	Nov 13, 2023
203.61.192.0/24	AS9913	RADB	Internet Information Group (133405)	MAINT-AS2764	Nov 13, 2023
203.61.194.0/24	AS9382	RADB	Sunrise Computer Systems (9261)	MAINT-AS2764	Nov 13, 2023