asn.dev

Autonomous system

AS23700 FASTNET-AS-ID Linknet-Fastnet ASN

Unclassified ARIN

IPv4 addresses 805K 30 prefixes
IPv6 prefixes 9 counted as prefixes, not addresses
Countries 1 mostly ID
Exchanges 3 recorded by PCH
Upstreams 3 4 downstream
Flagged prefixes 0 none

Summary

First Media

Indonesia · AI-generated

cable residential isp indonesia

FASTNET-AS-ID is the autonomous system for First Media, an Indonesian cable and fiber internet service provider.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries like fm-dyn-118-136-128-0.fast.net.id and netnames such as PTLINK-CGNT-NET-1 and BM-ID.
  • With 935,424 IPv4 addresses announced across 32 prefixes and only 8 observed neighbours, the high address-to-neighbour ratio indicates a large access or eyeball network rather than a transit provider.

Notable

  • Registrants include IRT-BM-ID for the majority of prefixes and PT. Link Net Tbk for the 149.108.0.0/16, 149.110.0.0/16, and 149.113.0.0/16 blocks, reflecting the corporate structure of the operator.
  • The inventory consists of a mix of large /15 and /16 blocks alongside smaller /17 to /23 subdivisions, typical of a major ISP managing diverse customer segments.
  • The AS has been visible in routing tables since 2003, indicating a long-standing presence in the Indonesian internet infrastructure.

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

Recorded at 3 exchanges in 1 country, largest first.

ExchangeLocationTheir address
OpenIXP Internet exchange PointJakarta, Indonesia218.100.36.45
EdgeNXT Internet ExchangeJakarta, Indonesia103.61.232.23
Digital Edge EPIX JakartaJakarta, Indonesia202.159.50.36

Transit providers

3 upstream, 4 downstream and 11 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS7632Linknet-Exchange ASN8,779
AS24482SG.GS150
AS7717OpenIXP ASN2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, 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 30 prefixes · 805K addresses IPv6 9 prefixes

CountryNamePrefixes
IDIndonesia39

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23700
Registry name
Fastnet-AS-ID
Abuse contact
abuse@firstmedia.com
Registered
2019-08-20
Last changed
2016-06-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0.6% valid · 1 valid, 159 with no ROA
ROAs
2 authorising AS23700
ASPA
no ASPA record
IRR
96% registered · 154 of 160 announcements 6 other origin
Route objects
12,540 naming AS23700

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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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