asn.dev

Autonomous system

AS38684 CMBDAEJEON-AS-KR CMB Daejeon Broadcasting Co,.Ltd

Unclassified ARIN

IPv4 addresses 53.25K 20 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

CMB Daejeon Broadcasting Co., Ltd.

Korea, Republic of · AI-generated

broadcasting business cable kr

CMBDAEJEON-AS-KR is held by CMB Daejeon Broadcasting Co., Ltd.

What it's used for

  • The address space is registered under the netname CMBI-NETDJ-KR with registrant IRT-KRNIC-KR, indicating a corporate network estate for the Daejeon-based cable broadcasting operator.
  • The AS announces 53,248 IPv4 addresses across 20 prefixes, with only 2 observed routing neighbours, a ratio consistent with an internal corporate or access network rather than a transit provider.
  • Traffic from this AS consists of internal corporate infrastructure and cable television distribution endpoints for the Daejeon region.

Notable

  • All registrants in the sample align with the announcer, identified as IRT-KRNIC-KR under the netname CMBI-NETDJ-KR.
  • The address inventory is finely subdivided into multiple /19, /20, /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation typical of a large corporate or regional utility estate.

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, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9318SK Broadband Co Ltd2,586
AS9457DREAMLINE CO.1,895

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 20 prefixes · 53.25K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of20

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS38684
Registry name
CMBDAEJEON-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, 74 with no ROA
ROAs
0 authorising AS38684
ASPA
no ASPA record
IRR
100% registered · 74 of 74 announcements
Route objects
93 naming AS38684

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