AS7656 — TWNAP-ADMIN-AS-AP Taiwan Network Access Point

Network type: residential

AS7656 announces 6 IPv4 prefixes covering 51,712 addresses and 1 IPv6 prefixes.

About this network

TWNAP-ADMIN-AS-AP is held by SaveCom International Inc., a Taipei telecoms company. The handle refers to the Taiwan Network Access Point (TWNAP), which SaveCom operates; the AS is described in the registry as TWNAP's transit and administration AS, the one that hands full routing to ISPs connected to the exchange.

What it's used for

• Transit and enterprise service. The registry note is explicit: ISPs attached to TWNAP that need reachability to the global internet learn full routes from this AS.
• About 51,000 IPv4 addresses across roughly 29 prefixes, all inside SaveCom's own 210.208.0.0/18 and 210.209.0.0/18 allocations, registered SAVECOM-NET, plus 2407:680:8000::/33.
• Reverse DNS is a mix of SaveCom's default host naming under savecom.net.tw, a -twnap suffixed pattern on the exchange-adjacent ranges, and occasional customer domains, which is what a business and IDC network looks like.

Notable

• The handle names an exchange, but this is not the exchange. TWNAP itself is the peering fabric; AS7656 is the operator's transit and administration AS sitting next to it, and the addresses are SaveCom's own.
• It is also not SaveCom's consumer network. The company runs a separate eyeball AS for home broadband, so an address seen here is far more likely to be a business circuit, a hosted server or a downstream ISP than a household.

Interesting

• The aut-num object still carries its original 1990s remarks, including the line that the operator will have a leased line to the US "very soon". The AS has been routing for thirty years; nobody ever went back to edit the note.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 122.10.204.0/24
• 150.129.209.0/24
• 210.208.0.0/18
• 210.208.64.0/21
• 210.208.128.0/18
• 210.209.0.0/18
• 2407:680:8000::/33

Upstream networks

• AS7533 Savecom International Inc.
• AS9676 SaveCom Internation Inc.
• AS10133 Chief Telecom Inc.
• AS24482 SG.GS

Downstream networks

• AS9676 SaveCom Internation Inc.

Adjacent networks

• AS9676 SaveCom Internation Inc.
• AS10133 Chief Telecom Inc.
• AS7533 Savecom International Inc.
• AS24482 SG.GS

Internet exchanges

• Taipei Internet Exchange (TPIX) — Taipei, Taiwan