Hostname

idsf.io

Last fetched Thu, 02 Jul 2026 17:13:38 GMT

idsf.io resolves to 1 IPv4 address operated by AS8437 in AT. WHOIS lists iana:1420 as the registrar.

Nutrition Label

Resolution chain

idsf.io 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
81.189.135.238	81.189.0.0/16	AS8437	—	AT

WHOIS identity

Registrar: iana:1420
Organization: ait austrian institute of technology
Contact emails: —

Subdomains

1 observed subdomain of idsf.io.

Subdomain
www.idsf.io

Web-graph footprint

Distinct hostnames that link to or from idsf.io in the public web crawl.

49 sites link to this hostname.

93 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 idsf.io.

Mechanism	Target
SPF_INCLUDE	spf.mailjet.com

Pivot deeper into the graph from idsf.io.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "idsf.io"})-[: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.