Hostname

rbtk.dk

Last fetched Mon, 27 Jul 2026 14:56:52 GMT

rbtk.dk resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA.

Nutrition Label

Resolution chain

rbtk.dk resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
104.21.92.216	104.21.80.0/20	AS13335	CLOUDFLARENET - Cloudflare, Inc.	CA
172.67.198.219	172.67.192.0/20	AS13335	CLOUDFLARENET - Cloudflare, Inc.	CA

WHOIS identity

Registrar: —
Organization: jens ?stergaard nielsen
Contact emails: —

Subdomains

1 observed subdomain of rbtk.dk.

Subdomain
www.rbtk.dk

Web-graph footprint

Distinct hostnames that link to or from rbtk.dk in the public web crawl.

13 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 rbtk.dk.

Mechanism	Target
SPF_INCLUDE	_spf.mx.cloudflare.net

Pivot deeper into the graph from rbtk.dk.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "rbtk.dk"})-[: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.