Hostname

4u2.pl

Last fetched Mon, 27 Jul 2026 06:55:23 GMT

4u2.pl resolves to 1 IPv4 address operated by AS16276 in PL. WHOIS lists registrar:michau enterprises ltd. as the registrar.

Nutrition Label

Resolution chain

4u2.pl 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
51.77.61.192	51.77.0.0/16	AS16276	—	PL

WHOIS identity

Registrar: registrar:michau enterprises ltd.
Organization: —
Contact emails: —

Subdomains

4 observed subdomains of 4u2.pl.

Subdomain
_dmarc.4u2.pl
_mta-sts.4u2.pl
mail.4u2.pl
www.4u2.pl

Web-graph footprint

Distinct hostnames that link to or from 4u2.pl in the public web crawl.

1 site linked to from this hostname.

Sample inbound links

Sample outbound links

vestacp.com

Threat posture

History

Mail and authentication

MX records

serwer1880805.home.pl

SPF policy

2 SPF mechanisms authorising senders for 4u2.pl.

Mechanism	Target
SPF_A	4u2.pl
SPF_MX	4u2.pl

Pivot deeper into the graph from 4u2.pl.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "4u2.pl"})-[: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.