Data as of Nov 14, 2026
203.17.40.0/22
No anonymizer space · no proxy exits in 30 daysTelstra Limited
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 |
|---|---|---|---|---|---|---|
| 203.17.40.0/21 | 2,048 | TELSTRAINTERNET-AU | Telstra Limited (ORG-TC6-AP) · AU | ALLOCATED PORTABLE | — | abuse@ |
| └ 203.17.40.0/22 | 1,024 | TELSTRAGLOBAL | unknown | ALLOCATED NON-PORTABLE | — | abuse@ |
| └ 203.17.40.152/29 | 8 | CUST-5860169 | Industrial & Decorative Coating Services | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.40.208/29 | 8 | CUST-5860671 | Emroc Pty Ltd - Radiation Oncology Victoria | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.41.64/28 | 16 | CUST-6001668 | Alphawest Services Pty Ltd | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.41.80/29 | 8 | CUST-6158646 | D2P Pty Ltd | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.41.88/29 | 8 | CUST-6198381 | SCA Secretarial | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.41.96/28 | 16 | CUST-1452 | Office of The Chief Electrical Inspector | ASSIGNED NON-PORTABLE | — | abuse@ |
| └ 203.17.41.112/29 | 8 | CUST-6204090 | Hoepners SCS Pty Ltd | ASSIGNED NON-PORTABLE | — | abuse@ |
Network & registry
Announced by
Covering announcement 203.17.40.0/21
- Prefix
- 203.17.40.0/21
- Announced by
- AS1221 Telstra Limited
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- TELSTRAINTERNET-AU
- Registrant
- Telstra Limited
- RIR
- APNIC
Origin network
AS1221
AU
- Name
- Telstra Limited
- Type
- Internet provider
- Registered
- Jan 31, 2000
- Domain
- telstra.com.au
- Website
- www.telstra.com.au/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.17.40.0/21
203.17.40.0/21
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Nov 2021 · 5.0 yr
- Origin networks
- 2
- Last change of origin
- Nov 2021
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 203.17.40.0/21 | AS1221 | /21 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 203.
17. 40. 0/ 21 - Netname
- TELSTRAINTERNET-AU
- Registrant
- Telstra Limited
- Registrant country
- AU
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- May 10, 2024
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- AU
- Delegated
- Jul 10, 1995
- Status
- assigned
Report abuse
Abuse contact
- abuse@
telstra. net - Name
- ABUSE TELSTRAAU
- Handle
- AT1005-AP