Hostname

k-system.co

Last fetched Tue, 21 Jul 2026 21:25:10 GMT

k-system.co resolves to 1 IPv4 address operated by AS23824 in JP. WHOIS lists iana:48 as the registrar.

Nutrition Label

Resolution chain

k-system.co 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
219.99.172.126	219.99.168.0/21	AS23824	—	JP

WHOIS identity

Registrar: iana:48
Organization: ds-brand co.,ltd.
Contact emails: —

Subdomains

2 observed subdomains of k-system.co.

Subdomain
mail.k-system.co
www.k-system.co

Web-graph footprint

Distinct hostnames that link to or from k-system.co in the public web crawl.

5 sites linked to from this hostname.

Sample inbound links

metoree.com

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mail.k-system.co

SPF policy

3 SPF mechanisms authorising senders for k-system.co.

Mechanism	Target
SPF_A	k-system.co
SPF_INCLUDE	spfgw.fsi.ne.jp
SPF_MX	k-system.co

Pivot deeper into the graph from k-system.co.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "k-system.co"})-[: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.