Data as of Nov 5, 2026
203.77.12.0/24
No anonymizer space · no proxy exits in 30 daysUnion Broadband Network · space held by Taiwan Fixed Network Co., 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 |
|---|---|---|---|---|---|---|
| 203.77.0.0/17 | 32,768 | TFN-TW-NET | Taiwan Fixed Network Co., LTD. | ALLOCATED PORTABLE | — | hostmaster@ |
| └ 203.77.12.0/24 | 256 | GCNET-TSWT-TW | The Sherwood Taipei | ASSIGNED NON-PORTABLE | — | hostmaster@ via TFN-TW-NET |
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 203.77.0.0/18
- Prefix
- 203.77.0.0/18
- Announced by
- AS24164 Union Broadband Network
- Type
- Residential
- Proxy exits
- 6
- RPKI
- RPKI valid
- Netname
- TFN-TW-NET
- Registrant
- Taiwan Fixed Network Co., LTD.
- RIR
- APNIC
Origin network
AS24164
TW
- Name
- Union Broadband Network
- Type
- Internet provider
- Registered
- Jul 11, 2005
- Domain
- twmbroadband.com
- Website
- www.twmbroadband.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.77.0.0/18
203.77.0.0/18
Routing history
- Pattern
- Rotating
- First seen
- May 2005
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 2
- Last change of origin
- Dec 2024
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 203.77.0.0/18 | AS4662 | /24 | APNIC | Another network |
| 203.77.0.0/18 | AS24164 | /24 | APNIC | RPKI valid |
IRR
Route objects on 203.77.0.0/18
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4662 not the origin | APNIC | GCNet (Reach & Range Inc.) | MAINT-GCNET-TW | Sep 4, 2008 |
| AS4662 not the origin | RADB | GCNet (Reach&Range Inc.) | MAINT-AS9924 | Apr 17, 2026 |
| AS4662 not the origin | NTTCOM | Taiwan Fixed Network | MAINT-AS9924 | Jan 4, 2010 |
| AS9505 not the origin | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jun 4, 2004 |
| AS24164 | NTTCOM | Proxy-registered route object(Customer) | MAINT-AS9924 | Dec 12, 2024 |
| AS24164 | RADB | Proxy-registered route object | MAINT-AS9924 | Apr 17, 2026 |
Whois
Registration for this announcement
- Range
- 203.
77. 0. 0/ 17 - Netname
- TFN-TW-NET
- Registrant
- Taiwan Fixed Network Co., LTD.
- Registrant country
- TW
- Organization
- Taiwan Fixed Network Co., LTD.
- Org country
- TW
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Nov 4, 2021
- Maintainer
- MAINT-TW-TWNIC
- RIR
- APNIC
- Country
- TW
- Delegated
- Oct 26, 1995
- Status
- assigned
Report abuse
Abuse contact
- hostmaster@
twnic. tw - Name
- ABUSE TWNICAP
- Handle
- AT939-AP