Hostname

siebertz.de

Last fetched Mon, 10 Aug 2026 09:12:30 GMT

siebertz.de appears in WhisperGraph with partial WHOIS records but no current public IPv4 resolution.

Nutrition Label

Resolution chain

siebertz.de has no current public IPv4 resolution in WhisperGraph. The WHOIS record below is the only graph data we have on this hostname.

WHOIS identity

No WHOIS records are currently associated with siebertz.de in WhisperGraph.

Subdomains

7 observed subdomains of siebertz.de.

Subdomain
autodiscover.siebertz.de
do-not-reply.siebertz.de
mail.siebertz.de
outlook.siebertz.de
owa.siebertz.de
siebertz.siebertz.de
www.siebertz.de

Web-graph footprint

Distinct hostnames that link to or from siebertz.de in the public web crawl.

Sample inbound links

top-aachen.de

Threat posture

History

Mail and authentication

MX records

mail.siebertz.de

SPF policy

2 SPF mechanisms authorising senders for siebertz.de.

Mechanism	Target
SPF_A	siebertz.de
SPF_MX	siebertz.de

Pivot deeper into the graph from siebertz.de.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "siebertz.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.