Hostname

tzk.co.jp

Last fetched Sun, 19 Jul 2026 11:07:22 GMT

tzk.co.jp resolves to 1 IPv4 address operated by AS9370 in JP.

Nutrition Label

Resolution chain

tzk.co.jp 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
163.43.87.148	163.43.0.0/16	AS9370	—	JP

WHOIS identity

Registrar: —
Organization: tsuzuku
Contact emails: —

Subdomains

1 observed subdomain of tzk.co.jp.

Subdomain
www.tzk.co.jp

Web-graph footprint

Distinct hostnames that link to or from tzk.co.jp in the public web crawl.

11 sites link to this hostname.

35 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

tzk.co.jp

SPF policy

2 SPF mechanisms authorising senders for tzk.co.jp.

Mechanism	Target
SPF_A	www3908.sakura.ne.jp
SPF_MX	tzk.co.jp

Pivot deeper into the graph from tzk.co.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "tzk.co.jp"})-[: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.