Hostname

bf-sys.com

Last fetched Tue, 21 Jul 2026 23:40:53 GMT

bf-sys.com resolves to 1 IPv4 address operated by AS41550 in UA. WHOIS lists iana:379 as the registrar.

Nutrition Label

Resolution chain

bf-sys.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
91.196.0.52	91.196.0.0/24	AS41550	—	UA

WHOIS identity

Registrar: iana:379
Organization: —
Contact emails: —

Subdomains

5 observed subdomains of bf-sys.com.

Subdomain
ftp.bf-sys.com
mail.bf-sys.com
pop.bf-sys.com
smtp.bf-sys.com
www.bf-sys.com

Threat posture

History

Mail and authentication

MX records

SPF policy

4 SPF mechanisms authorising senders for bf-sys.com.

Mechanism	Target
SPF_A	bf-sys.com
SPF_INCLUDE	_spf.google.com
SPF_IP	91.196.0.52
SPF_MX	bf-sys.com

Pivot deeper into the graph from bf-sys.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "bf-sys.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.