asn.dev

Autonomous system

AS37983 Bumrungrad-CSLOXINFO-TH - CSLOXINFO

Unclassified APNIC

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly TH
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Bumrungrad Hospital

Thailand · AI-generated

healthcare business th

BUMRUNGRAD-CSLOXINFO-TH is operated by Bumrungrad Hospital, a major private medical facility in Bangkok.

What it's used for

  • The address space carries internal hospital infrastructure, indicated by the netname bumrungrad-TH and the registrant Loxinfo IP Admins.
  • The AS announces a single IPv4 prefix, 58.137.197.0/24, comprising 256 addresses, with 0 IPv6 prefixes.
  • With only 1 observed neighbour, this network functions as a stub or internal corporate estate rather than a transit or access provider.

Notable

  • The registrant Loxinfo IP Admins and IRT contact IRT-CSLOXINFO-TH align with the AS handle, confirming that CS Loxinfo Public Company Limited manages the IP resources for this specific site.
  • The inventory consists of a single /24 block, representing a finely subdivided internal estate for a specific corporate location.

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, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4750CS LOXINFO PUBLIC COMPANY LIMITED65

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
THThailand1

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS37983
Registry name
Bumrungrad-CSLOXINFO-TH
Registrant
CSLOXINFO
Abuse contact
csl-ip-admin@ais.co.th
Registered
2008-09-04
Last changed
2023-09-05
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS37983
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS37983

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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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