asn.dev

Autonomous system

AS38680 CMBHK-AS-KR CMB

Unclassified APNIC

IPv4 addresses 43.01K 5 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

CMB

Korea, Republic of · AI-generated

business korea ipv4

The AS handle CMBHK-AS-KR is held by CMB.

What it's used for

  • The address space carries netnames identified as CMBI-NETHK-KR across all announced prefixes.
  • The network announces 43008 IPv4 addresses across 5 prefixes, with 3 observed neighbours, indicating a role consistent with an access or internal corporate estate rather than transit.
  • The inventory consists entirely of IPv4 space, with no IPv6 prefixes announced.

Notable

  • All registrants for the announced prefixes are listed as IRT-KRNIC-KR with the netname CMBI-NETHK-KR, which aligns with the AS holder identity.
  • The address inventory is composed of five distinct IPv4 blocks, including two /18s, one /19, and two /22s.

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

2 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9318SK Broadband Co Ltd1,754
AS9457DREAMLINE CO.1,004

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, 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 5 prefixes · 43.01K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of5

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS38680
Registry name
CMBHK-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2007-08-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 45 with no ROA
ROAs
0 authorising AS38680
ASPA
no ASPA record
IRR
100% registered · 45 of 45 announcements
Route objects
102 naming AS38680

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 1,768 prefixes, as published 2026-10-12. 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