Hostname

100c.cz

Last fetched Wed, 22 Jul 2026 08:42:24 GMT

100c.cz resolves to 1 IPv4 address operated by AMAZON-02 - Amazon.com, Inc. in DE. WHOIS lists registrar:reg-active24 as the registrar.

Nutrition Label

Resolution chain

100c.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
52.57.125.249	52.57.0.0/16	AS16509	AMAZON-02 - Amazon.com, Inc.	DE

WHOIS identity

Registrar: registrar:reg-active24
Organization: sony music / bonton s.r.o.
Contact emails: —

Subdomains

1 observed subdomain of 100c.cz.

Subdomain
www.100c.cz

Web-graph footprint

Distinct hostnames that link to or from 100c.cz in the public web crawl.

19 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for 100c.cz.

Mechanism	Target
SPF_REDIRECT	_spf.evanek.cz

Pivot deeper into the graph from 100c.cz.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "100c.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.