Hostname
castorus.com
Last fetched
castorus.com resolves to 1 IPv4 address operated by OVH in FR. WHOIS lists iana:81 as the registrar.
Nutrition Label
Resolution chain
castorus.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 |
|---|---|---|---|---|
| 51.91.106.225 | 51.91.0.0/16 | AS16276 | OVH | FR |
WHOIS identity
- Registrar
- iana:81
- Organization
- alexandre ishak
- Contact emails
Subdomains
5 observed subdomains of castorus.com.
Web-graph footprint
Distinct hostnames that link to or from castorus.com in the public web crawl.
99 sites link to this hostname.
Threat posture
History
Mail and authentication
SPF policy
10 SPF mechanisms authorising senders for castorus.com.
| Mechanism | Target |
|---|---|
| SPF_A | castorus.com |
| SPF_IP | 176.31.225.102 |
| SPF_IP | 2001:41d0:203:22cb:0:0:0:1 |
| SPF_IP | 2001:41d0:203:8099:0:0:0:2 |
| SPF_IP | 2001:41d0:a:45d7:0:0:0:0 |
| SPF_IP | 37.187.135.215 |
| SPF_IP | 51.178.133.153 |
| SPF_IP | 51.91.106.225 |
| SPF_IP | 54.37.81.203 |
| SPF_MX | castorus.com |
Related pages
Pivot deeper into the graph from castorus.com.
- IP · 51.91.106.225
- ASN · AS16276OVH
- Registrar · iana:81
- Country · FR
- Email · 1b77411c4cf824f674c880e41616c41d-33171@contact.gandi.net
- TLD · .com
- Browse hostnames · ca…
- Glossary · What is a hostname?
- Whisper Internet Directory — home
- Live MOAS conflicts feed
- Threat feed · Spamhaus DROP
- United States internet infrastructure
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "castorus.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 20Or query Whisper from your own LLM workflow via the Whisper MCP server.