Hostname

sysy.com

Last fetched Sun, 24 May 2026 04:01:16 GMT

sysy.com resolves to 1 IPv4 address operated by CLOUDPIT in DE.

Nutrition Label

Resolution chain

sysy.com 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
91.151.21.137	91.151.20.0/23	AS45012	CLOUDPIT	DE

WHOIS identity

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Subdomains

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Web-graph footprint

Distinct hostnames that link to or from sysy.com in the public web crawl.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

smtpin.rzone.de

SPF policy

1 SPF mechanism authorising senders for sysy.com.

Mechanism	Target
SPF_REDIRECT	_spf.strato.com

Pivot deeper into the graph from sysy.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "sysy.com"})-[: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.