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Hostname

firstsign.us

Last fetched

firstsign.us is a registered hostname under the .us top-level domain. Live infrastructure data is temporarily unavailable; refresh in a moment.

Nutrition Label

WHISPER CANON · firstsign.usRouting diversity—Peering density—MOAS conflict—Threat-feed listings—WHOIS transparency—Resolver footprint—canon.whisper.security/host/firstsign.us

Resolution chain

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WHOIS identity

Registrar
iana:609
Organization
anonymize,
Contact emails

Subdomains

8 observed subdomains of firstsign.us.

Subdomain
autodiscover.firstsign.us
cpanel.firstsign.us
cpcalendars.firstsign.us
cpcontacts.firstsign.us
mail.firstsign.us
webdisk.firstsign.us
webmail.firstsign.us
www.firstsign.us

Web-graph footprint

Distinct hostnames that link to or from firstsign.us in the public web crawl.

9 sites link to this hostname.

309 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

  • firstsign.us

SPF policy

4 SPF mechanisms authorising senders for firstsign.us.

MechanismTarget
SPF_Afirstsign.us
SPF_INCLUDE_spf.arandomserver.com
SPF_IP198.252.98.1/23
SPF_MXfirstsign.us

Related pages

Pivot deeper into the graph from firstsign.us.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "firstsign.us"})-[: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.