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Hostname

21up.de

Last fetched

21up.de resolves to 1 IPv4 address operated by AS63949 in DE.

Nutrition Label

WHISPER CANON · 21up.deRouting diversity1.5/10Peering density5.9/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint4.6/10canon.whisper.security/host/21up.de

Resolution chain

21up.de resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
139.144.67.12139.144.64.0/20AS63949—DE

WHOIS identity

No WHOIS records are currently associated with 21up.de in WhisperGraph.

Subdomains

6 observed subdomains of 21up.de.

Subdomain
grammm01.21up.de
mail01.21up.de
mail02.21up.de
rdpgw.21up.de
web04.21up.de
www.21up.de

Web-graph footprint

Distinct hostnames that link to or from 21up.de in the public web crawl.

30 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

7 SPF mechanisms authorising senders for 21up.de.

MechanismTarget
SPF_A21up.de
SPF_Amail01.21up.de
SPF_Awww.21up.de
SPF_IP109.90.79.226
SPF_IP109.90.79.227
SPF_IP139.144.67.12
SPF_MX21up.de

Related pages

Pivot deeper into the graph from 21up.de.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "21up.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.