asn.dev

Autonomous system

AS17854 SKBCABLELINE-AS-KR SK Broadband Co Ltd

Unclassified APNIC

IPv4 addresses 96.26K 72 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

SK Broadband

Korea, Republic of · AI-generated

cable residential broadband korea

The AS handle SKBCABLELINE-AS-KR is held by SK Broadband Co Ltd.

What it's used for

  • The address space carries residential broadband traffic, indicated by the consistent netname broadNnet-KR across all sampled prefixes.
  • The AS announces 96256 IPv4 addresses across 72 prefixes while maintaining only 1 observed neighbour, a ratio that identifies it as an access network rather than a transit provider.

Notable

  • All registrants for the largest prefixes are listed as IRT-KRNIC-KR, which aligns with the announcer's identity as a major South Korean cable operator.
  • The inventory consists entirely of IPv4 space with no IPv6 prefixes announced, reflecting a legacy or IPv4-centric deployment strategy.
  • The address inventory is finely subdivided into numerous /20, /21, and /22 blocks, typical of a large-scale consumer ISP managing distinct customer segments or regional nodes.

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
AS9318SK Broadband Co Ltd3,224

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 72 prefixes · 96.26K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of72

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS17854
Registry name
SKBCABLELINE-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2001-07-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 52 with no ROA
ROAs
0 authorising AS17854
ASPA
no ASPA record
IRR
100% registered · 52 of 52 announcements
Route objects
212 naming AS17854

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