Hostname

wff.nu

Last fetched Thu, 09 Jul 2026 14:35:51 GMT

wff.nu resolves to 1 IPv4 address operated by AS197308 in SE.

Nutrition Label

Resolution chain

wff.nu 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
81.91.4.137	81.91.0.0/20	AS197308	—	SE

WHOIS identity

No WHOIS records are currently associated with wff.nu in WhisperGraph.

Subdomains

1 observed subdomain of wff.nu.

Subdomain
www.wff.nu

Web-graph footprint

Distinct hostnames that link to or from wff.nu in the public web crawl.

6 sites link to this hostname.

50 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for wff.nu.

Mechanism	Target
SPF_INCLUDE	_spf.egensajt.se

Pivot deeper into the graph from wff.nu.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "wff.nu"})-[: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.