Autonomous system
AS9506 SINGTEL-FIBRE Singtel Fibre Broadband
Residential APNIC
Summary
Singtel Fibre Broadband (SingNet)
isp residential legacy
AS9506 (SINGTEL-FIBRE) is held by Singapore Telecommunications Ltd (Singtel) and carries its consumer fibre broadband service. Unlike Singtel's international backbone or enterprise ASes, this one exists for a single purpose: terminating residential subscribers in Singapore.
What it's used for
Every piece of evidence lines up on an eyeball access network. AS9506 announces 80 IPv4 prefixes covering roughly 983,040 addresses — close to a million — including large blocks like 116.14.0.0/15, 121.6.0.0/16, 219.74.0.0/16 and 42.60.0.0/16. Alongside that sit 283 IPv6 prefixes out of Singtel's 2400:d801::/32 and 2400:d802:: space, which is the fingerprint of an ISP handing out per-customer IPv6 delegations at scale.
The neighbour count is the confirming signal, and it works in the opposite direction from a carrier's. Only about 2 BGP neighbours are observed. A transit provider holding a million addresses would peer with hundreds of networks; this AS reaches the world through Singtel's own upstream ASes and does nothing else. That is exactly how a large operator structures a dedicated access AS.
Reverse DNS closes the case. Sampled addresses across the announced ranges resolve to generated names of the form bb116-14-0-5.singnet.com.sg — the bb prefix denoting broadband, under SingNet, Singtel's consumer ISP brand. This is subscriber space.
Notable
- Traffic originating here is residential end users, so it should be treated as consumer eyeball space for geolocation, abuse and rate-limiting purposes.
- The IPv6 footprint is far broader than the IPv4 one in prefix count, reflecting per-subscriber delegations rather than a shared pool.
- Singtel operates several separate ASes; this is the retail broadband one, not the international carrier network.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 1 downstream and 4 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3758 | SingNet | 14,594 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 171 prefixes · 929K addresses IPv6 635 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 806 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9506- Registry name
- SINGTEL-FIBRE
- Registrant
- Singapore Telecommunications Ltd, Magix Services
- Abuse contact
- hostmaster@singnet.com.sg
- Registered
- 2008-09-04
- Last changed
- 2026-01-29
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 99% valid · 365 valid, 0 with no ROA 5 RPKI-invalid
- ROAs
- 508 authorising AS9506
- ASPA
- no ASPA record
- IRR
- 100% registered · 370 of 370 announcements
- Route objects
- 9,757 naming AS9506
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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