Hostname

arclib.cz

Last fetched Mon, 27 Jul 2026 09:13:51 GMT

arclib.cz resolves to 1 IPv4 address operated by AS2852 in CZ.

Nutrition Label

Resolution chain

arclib.cz 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
147.231.63.10	147.231.0.0/16	AS2852	—	CZ

WHOIS identity

No WHOIS records are currently associated with arclib.cz in WhisperGraph.

Subdomains

1 observed subdomain of arclib.cz.

Subdomain
www.arclib.cz

Web-graph footprint

Distinct hostnames that link to or from arclib.cz in the public web crawl.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

relay.lib.cas.cz

SPF policy

1 SPF mechanism authorising senders for arclib.cz.

Mechanism	Target
SPF_MX	arclib.cz

Pivot deeper into the graph from arclib.cz.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "arclib.cz"})-[: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.