Hostname

penn-tk.de

Last fetched Fri, 19 Jun 2026 14:10:19 GMT

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

Nutrition Label

Resolution chain

Resolution chain data is temporarily unavailable. Refresh in a moment to retry.

WHOIS identity

No WHOIS records are currently associated with penn-tk.de in WhisperGraph.

Subdomains

2 observed subdomains of penn-tk.de.

Subdomain
webmail.penn-tk.de
www.penn-tk.de

Web-graph footprint

Distinct hostnames that link to or from penn-tk.de in the public web crawl.

6 sites link to this hostname.

98 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mx2.sharkness.de

SPF policy

5 SPF mechanisms authorising senders for penn-tk.de.

Mechanism	Target
SPF_A	mail.sharkness-newsletter.de
SPF_A	mx1.sharkness.de
SPF_A	mx2.sharkness.de
SPF_A	penn-tk.de
SPF_MX	penn-tk.de

Pivot deeper into the graph from penn-tk.de.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "penn-tk.de"})-[: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.