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Hostname

hier.nu

Last fetched

hier.nu resolves to 1 IPv4 address operated by AS20857 in NL. WHOIS lists iana:1732 as the registrar.

Nutrition Label

WHISPER CANON · hier.nuRouting diversity1.5/10Peering density1.2/10MOAS conflict✓ noneThreat-feed listings8.0/10WHOIS transparency0.0/10Resolver footprint3.2/10canon.whisper.security/host/hier.nu

Resolution chain

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

IPPrefixASNOperatorCountry
37.97.138.3737.97.128.0/17AS20857—NL

WHOIS identity

Registrar
iana:1732
Organization
—
Contact emails
—

Subdomains

16 observed subdomains of hier.nu.

Subdomain
acc.hier.nu
data.hier.nu
douchetool-acc.hier.nu
douchetool.hier.nu
kids.hier.nu
link.hier.nu
mx.hier.nu
test.hier.nu
top10.hier.nu
warmtepomptool-acc.hier.nu
warmtepomptool.hier.nu
wildcard.hier.nu
www.hier.nu
zonnepanelentool-acc.hier.nu
zonnepanelentool.hier.nu

Showing 15 of 16. View all subdomains →

Web-graph footprint

Distinct hostnames that link to or from hier.nu in the public web crawl.

586 sites link to this hostname.

627 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

5 SPF mechanisms authorising senders for hier.nu.

MechanismTarget
SPF_INCLUDE_spf.mlsend.com
SPF_INCLUDEsendgrid.net
SPF_INCLUDEspf.e-captain.nl
SPF_INCLUDEspf.protection.outlook.com
SPF_IP37.97.138.37

Related pages

Pivot deeper into the graph from hier.nu.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "hier.nu"})-[: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.