asn.dev

Autonomous system

AS17878 MARK1-AS-KR DREAMMARK1

Unclassified APNIC

IPv4 addresses 167K 50 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 1 4 downstream
Flagged prefixes 0 none

Summary

Dreammark1

Korea, Republic of · AI-generated

korea business ipv4

The AS handle MARK1-AS-KR is held by Dreammark1.

What it's used for

  • The address space carries netnames DREAMMARK1-KR and LXN-KR, with significant portions registered to APNIC.
  • The AS announces 166,912 IPv4 addresses across 50 prefixes while maintaining only 5 observed neighbours, a ratio indicative of an access or business network rather than a transit provider.

Notable

  • Registrants include IRT-KRNIC-KR for DREAMMARK1-KR and LXN-KR blocks, alongside APNIC Hostmaster for other ranges.
  • The inventory consists entirely of IPv4 space with no IPv6 prefixes announced.
  • The address inventory is finely subdivided into 50 prefixes, including multiple /20 and /23 blocks.

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, 4 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9457DREAMLINE CO.3,245

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 50 prefixes · 167K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of50

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS17878
Registry name
MARK1-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2001-07-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
5% valid · 3 valid, 52 with no ROA
ROAs
2 authorising AS17878
ASPA
no ASPA record
IRR
100% registered · 55 of 55 announcements
Route objects
63 naming AS17878

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: 442 networks and 1,772 prefixes, as published 2026-10-15. 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