Autonomous system
AS45372 ULN-AS-KR ULNetworks Co., Ltd.
Unclassified APNIC
Summary
ULNetworks
korea business ipv4 enterprise
ULN-AS-KR is operated by ULNetworks Co., Ltd.
What it's used for
- The address space is uniformly registered under the netname
ULNETWORKS-KRwith registrantIRT-KRNIC-KRacross all seven announced prefixes. - The AS announces 63,488 IPv4 addresses across 7 prefixes while maintaining only 2 observed neighbours, a ratio characteristic of an internal corporate estate or private network rather than a public transit or access provider.
- As a South Korean entity, the traffic consists of internal corporate communications and data flows for ULNetworks' business operations.
Notable
- All registrants align with the announcer, consistently showing
IRT-KRNIC-KRfor every prefix in the inventory. - The inventory consists of seven distinct IPv4 blocks, including a /17, a /18, a /19, and four smaller /21 and /22 blocks, all located in Korea, Republic of.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
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
IPv4 7 prefixes · 63.49K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 7 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS45372- Registry name
- ULN-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 2008-08-19
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 9 with no ROA
- ROAs
- 0 authorising AS45372
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 461 naming AS45372
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