Autonomous system
AS38101 YULCHON-AS-KR Yulchon LLC
Unclassified RIPE
Summary
Yulchon LLC
business legal corporate internal
YULCHON-AS-KR is operated by Yulchon LLC, a major international law firm headquartered in Seoul.
What it's used for
- The address space carries internal corporate traffic, evidenced by netnames
DREAMX-KRandBORANET-KRassigned to the firm's infrastructure. - The AS announces 1792 IPv4 addresses across 7 prefixes while maintaining only 2 observed neighbours, a ratio indicative of a small, self-contained internal network rather than a transit or access provider.
- Traffic from this AS consists of office workers and legal professionals accessing the firm's internal systems and external services from its Seoul headquarters and potentially other office locations.
Notable
- Registrants for all announced prefixes are listed as
IRT-KRNIC-KR, which is the standard registry contact for Korean IP allocations, consistent with the announcer being a domestic Korean entity. - The address inventory is composed of seven /24 blocks, all located in Korea, Republic of, reflecting a finely subdivided internal corporate estate typical of a large professional services firm managing its own network.
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 2026-10-22, 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 · 1.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS38101- Registry name
- YULCHON-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 2006-07-07
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS38101
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 7 announcements
- Route objects
- 6 naming AS38101
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 1,779 prefixes, as published 2026-10-23. 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