Hostname

htc21.co.kr

Last fetched Fri, 14 Aug 2026 03:05:28 GMT

htc21.co.kr resolves to 1 IPv4 address operated by KIXS-AS-KR-KR - Korea Telecom in KR. WHOIS lists registrar:(?)????? as the registrar.

Nutrition Label

Resolution chain

htc21.co.kr resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
218.145.71.209	218.144.0.0/13	AS4766	KIXS-AS-KR-KR - Korea Telecom	KR

WHOIS identity

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

Subdomains

1 observed subdomain of htc21.co.kr.

Subdomain
www.htc21.co.kr

Web-graph footprint

Distinct hostnames that link to or from htc21.co.kr in the public web crawl.

12 sites linked to from this hostname.

Sample outbound links

Threat posture

History

Mail and authentication

MX records

gwmail.ktbizoffice.com

SPF policy

1 SPF mechanism authorising senders for htc21.co.kr.

Mechanism	Target
SPF_INCLUDE	gwspf.ktbizoffice.com

Pivot deeper into the graph from htc21.co.kr.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "htc21.co.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.