asn.dev

Autonomous system

AS45143 SINGTELMOBILE-AS-AP SINGTEL MOBILE INTERNET SERVICE PROVIDER Singapore

Unclassified APNIC

IPv4 addresses 111K 36 prefixes
IPv6 prefixes 50 counted as prefixes, not addresses
Countries 1 mostly SG
Exchanges 0 recorded by PCH
Upstreams 1 1 downstream
Flagged prefixes 0 none

Summary

Singtel Mobile

Singapore · AI-generated

mobile residential singapore telecom

SINGTELMOBILE-AS-AP is operated by Singtel Mobile, the mobile division of Singapore Telecommunications.

What it's used for

  • The address space carries mobile subscriber traffic, evidenced by netnames such as SINGTELMOBILE and SINGTELMOBILE-SG registered to Singapore Telecom Mobile Pte Ltd.
  • The AS announces 111,104 IPv4 addresses across 31 prefixes and 44 IPv6 prefixes, with only 2 observed neighbours, indicating a large access network serving end-user devices rather than a transit provider.
  • Traffic from this AS consists of mobile data, voice, and messaging for Singtel's subscriber base in Singapore.

Notable

  • All registrants in the sample are Singapore Telecom Mobile Pte Ltd, consistent with the AS holder.
  • The address inventory is finely subdivided into numerous /20, /21, and /22 blocks, typical of a mobile operator managing large pools of subscriber addresses.

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

Full topology · Graph

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 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3758SingNet6,584

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 36 prefixes · 111K addresses IPv6 50 prefixes

CountryNamePrefixes
SGSingapore86

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS45143
Registry name
SINGTELMOBILE-AS-AP
Registrant
Singapore Telecom Mobile Pte Ltd
Abuse contact
alishang@singtel.com
Registered
2008-09-04
Last changed
2021-01-18
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
99.2% valid · 127 valid, 0 with no ROA 1 RPKI-invalid
ROAs
128 authorising AS45143
ASPA
no ASPA record
IRR
100% registered · 128 of 128 announcements
Route objects
1,121 naming AS45143

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: 436 networks and 1,771 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

Cross-check