Data as of Nov 6, 2026
203.164.3.0/24
No anonymizer space · no proxy exits in 30 daysMicroplex 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 |
|---|---|---|---|---|---|---|
| 203.164.0.0/19 | 8,192 | OPTUSINTERNET-AU | Optus Internet Pty Ltd (ORG-OIPL5-AP) · AU | ALLOCATED PORTABLE | Sep 4, 2008 | abuse@ |
Network & registry
Announced by
Covering announcement 203.164.0.0/16
- Prefix
- 203.164.0.0/16
- Announced by
- AS4804 Microplex PTY LTD
- Type
- Residential
- Proxy exits
- 761
- Always-on exits
- 67
- RPKI
- RPKI valid
- RIR
- APNIC
Registry
Holder
- Organization
- Not stated by the registry
Origin network
AS4804
AU
- Name
- Microplex PTY LTD
- Type
- Internet provider
- Registered
- Nov 7, 1996
- Domain
- optus.com.au
- Website
- optus.com.au
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.164.0.0/16
203.164.0.0/16
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 |
|---|---|---|---|---|
| 203.164.0.0/16 | AS4804 | /16 | APNIC | RPKI valid |
Whois
Registration for this announcement
203.164.0.0/16 spans several registrations: 8 records are listed under Registrations.
- Registrant country
- AU
- RIR
- APNIC
- Country
- AU
- Delegated
- Aug 12, 1999
- Status
- assigned