Data as of Nov 7, 2026
123.243.51.0/24
No anonymizer space · no proxy exits in 30 daysAAPT Limited
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
81% of it
Recent change
New origin Aug 2026
from AS7545 TPG Telecom Limited
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 123.243.0.0/16 since Feb 2007 | AS7545 | Residential | 1,901 33 always on |
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 |
|---|---|---|---|---|---|---|
| 123.243.51.0/24 | 256 | AAPT-AU | AAPT Limited (ORG-AL1-AP) · AU | ALLOCATED PORTABLE | Jun 18, 2026 | ipnoc@ |
| └ 123.243.51.4/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.8/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.12/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.16/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.20/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.24/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.32/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.36/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.40/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.44/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.48/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.52/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.56/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.60/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.64/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.68/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.76/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.80/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.84/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.88/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.96/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.120/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.124/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.128/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.132/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.136/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.140/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.144/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.152/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.156/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.160/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.164/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.168/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.172/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.176/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.180/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.188/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.192/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.196/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.200/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.204/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.208/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.212/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.216/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.220/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.224/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.228/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.232/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.240/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.244/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.248/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
| └ 123.243.51.252/30 | 4 | TPGInternetPtyLtd | TPG Internet Pty Ltd. | ASSIGNED NON-PORTABLE | — | abuse1@ |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 208 | 81% | 52 | |
| Internet provider | 48 | 19% | 8 |
Network & registry
Origin network
AS2764
AU
- Name
- AAPT Limited
- Type
- Internet provider
- Registered
- Aug 1, 2002
- Domain
- aapt.com.au
- Website
- www.vocus.com.au
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Apr 2020
- Current origin since
- Aug 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Aug 2026
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 123.
243. 51. 0/ 24 - Netname
- AAPT-AU
- Registrant
- AAPT Limited
- Registrant country
- AU
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 18, 2026
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- AU
- Delegated
- Feb 14, 2007
- Status
- assigned
Report abuse
Abuse contact
- abuse1@
aapt. com. au - Name
- ABUSE AAPTAU
- Handle
- AA1416-AP