Hostname

castor.io

Last fetched Tue, 21 Jul 2026 10:07:33 GMT

castor.io has no current public IPv4 resolution in WhisperGraph; WHOIS lists iana:269 as the registrar.

Nutrition Label

Resolution chain

castor.io has no current public IPv4 resolution in WhisperGraph. The WHOIS record below is the only graph data we have on this hostname.

WHOIS identity

Registrar: iana:269
Organization: —
Contact emails: —

Subdomains

39 observed subdomains of castor.io.

Subdomain
api.castor.io
app.castor.io
cloud.castor.io
director.castor.io
f2f.castor.io
fotobox.castor.io
git.castor.io
hh.castor.io
imap.castor.io
jitsi.castor.io
lapp.castor.io
lvr.castor.io
lvrdev.castor.io
meet.castor.io
meet1.castor.io
mqtt.castor.io
omtest-pma.castor.io
omtest.castor.io
platform.castor.io
setcon.castor.io
sh.castor.io
site.castor.io
smtp.castor.io
stest.castor.io
temp.castor.io

Showing 25 of 39. View all subdomains →

Threat posture

History

Mail and authentication

MX records

mail.castorlighting.de

SPF policy

3 SPF mechanisms authorising senders for castor.io.

Mechanism	Target
SPF_A	castor.io
SPF_IP	144.76.64.92/32
SPF_MX	castor.io

Pivot deeper into the graph from castor.io.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "castor.io"})-[: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.