Hostname

4th.kr

Last fetched Wed, 24 Jun 2026 03:25:10 GMT

4th.kr is a registered hostname under the .kr top-level domain. Live infrastructure data is temporarily unavailable; refresh in a moment.

Nutrition Label

Resolution chain

Resolution chain data is temporarily unavailable. Refresh in a moment to retry.

WHOIS identity

Registrar: registrar:(?)???
Organization: ??? ??? ???
Contact emails: —

Subdomains

6 observed subdomains of 4th.kr.

Subdomain
admin.4th.kr
cdn.4th.kr
cms.4th.kr
m.4th.kr
slv.4th.kr
www.4th.kr

Web-graph footprint

Distinct hostnames that link to or from 4th.kr in the public web crawl.

125 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

aspmx.whoisworks.com

SPF policy

2 SPF mechanisms authorising senders for 4th.kr.

Mechanism	Target
SPF_INCLUDE	email.ncloud.com
SPF_INCLUDE	spf1.whoisworks.com

Pivot deeper into the graph from 4th.kr.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

MATCH (h:HOSTNAME {name: "4th.kr"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
      -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.