Autonomous system
AS7473 SINGTEL-AS-AP Singapore Telecommunications Ltd
Unclassified APNIC
Summary
Singapore Telecommunications Ltd (SingTel Internet Exchange / STiX)
transit legacy
SINGTEL-AS-AP is STiX, the Singapore Telecommunications Internet Exchange: Singtel's international IP transit backbone. Launched in 1998, it was the first regional internet backbone in South-East Asia and remains one of the largest IP networks in Asia-Pacific.
What it's used for
- Wholesale IP transit. STiX sells full-table transit to carriers, ISPs and content networks across Asia, and peers extensively in Asia, Oceania, the US and Europe.
- It rides Singtel's submarine-cable capacity (APCN2, SEA-ME-WE, SJC, Unity and others), which is what lets a Singapore-anchored AS act as a genuinely intercontinental backbone.
Notable
- This is Singtel's carrier AS, not its eyeball network. Singtel's Singapore consumer broadband rides SingNet (AS3758). Conflating the two is a common mistake: traffic seen from AS7473 is transit, not residential subscribers.
- The
AS-STIXroute-set is a familiar sight in Asian routing policy, listing the many downstream networks that reach the internet through AS7473.
Interesting
- Singapore's position at the crossing point of the Indian Ocean and Pacific cable systems is why a national carrier from a city-state ended up operating a top-tier regional backbone. Geography, more than market size, made STiX.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 7 exchanges in 5 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.196.212 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.211.72 |
| Coresite - Any2 West | Los Angeles, United States | 206.72.210.63 |
| Any2 California | Los Angeles, United States | 206.72.210.63 |
| Hong Kong Internet Exchange | Hong Kong, China | 123.255.90.77 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.126 |
| Equinix Internet Exchange Palo Alto | Palo Alto, United States | 198.32.176.50 |
Transit providers
18 upstream, 178 downstream and 337 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 55 prefixes · 52.99K addresses IPv6 26 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 81 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS7473- Registry name
- SINGTEL-AS-AP
- Registrant
- Singapore Telecommunications (SINGTEL Internet Exchange)
- Abuse contact
- leonkoh@singtel.com
- Registered
- 2008-09-04
- Last changed
- 2021-01-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 89% valid · 49 valid, 4 with no ROA 2 RPKI-invalid
- ROAs
- 411 authorising AS7473
- ASPA
- no ASPA record
- IRR
- 100% registered · 55 of 55 announcements
- Route objects
- 524 naming AS7473
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere