Data as of Nov 6, 2026
61.88.137.56/29
No anonymizer space · no proxy exits in 30 daysSingTel Optus Pty Ltd
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 61.88.0.0/16 | 65,536 | OPTUSCOM-AU | SingTel Optus Pty Ltd (ORG-SOPL2-AP) · AU | ALLOCATED PORTABLE | — | abuse@ |
| └ 61.88.137.56/29 | 8 | FIELDATWORK | OPTUS Customer Network | ASSIGNED NON-PORTABLE | — | abuse@ via OPTUSCOM-AU |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 61.88.128.0/18
- Prefix
- 61.88.128.0/18
- Announced by
- AS7474 SingTel Optus Pty Ltd
- Type
- Internet provider
- Proxy exits
- 1
- RPKI
- RPKI valid
- Netname
- OPTUSCOM-AU
- Registrant
- SingTel Optus Pty Ltd
- RIR
- APNIC
Origin network
AS7474
AU
- Name
- SingTel Optus Pty Ltd
- Type
- Internet provider
- Registered
- Feb 3, 1997
- Domain
- optus.com.au
- Website
- optus.com.au/business/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 61.88.128.0/18
61.88.128.0/18
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 61.88.128.0/18 | AS7474 | /18 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 61.
88. 0. 0/ 16 - Netname
- OPTUSCOM-AU
- Registrant
- SingTel Optus Pty Ltd
- Registrant country
- AU
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jan 15, 2021
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- AU
- Delegated
- Oct 16, 2001
- Status
- assigned
Report abuse
Abuse contact
- abuse@
optusnet. com. au - Name
- ABUSE OPTUSCOMAU
- Handle
- AO399-AP