Hostname
gcastro.ca
Last fetched
gcastro.ca resolves to 1 IPv4 address operated by AMAZON-AES - Amazon.com, Inc. in US. WHOIS lists registrar:promo people inc. as the registrar.
Nutrition Label
Resolution chain
gcastro.ca 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 |
|---|---|---|---|---|
| 54.172.239.26 | 54.172.0.0/15 | AS14618 | AMAZON-AES - Amazon.com, Inc. | US |
WHOIS identity
- Registrar
- registrar:promo people inc.
- Organization
- —
- Contact emails
- —
Subdomains
7 observed subdomains of gcastro.ca.
Web-graph footprint
Distinct hostnames that link to or from gcastro.ca in the public web crawl.
1 site linked to from this hostname.
Sample inbound links
Sample outbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
8 SPF mechanisms authorising senders for gcastro.ca.
| Mechanism | Target |
|---|---|
| SPF_A | gcastro.ca |
| SPF_INCLUDE | relay.mailchannels.net |
| SPF_INCLUDE | spf.antispamcloud.com |
| SPF_INCLUDE | spf.hostpapa.com |
| SPF_IP | 66.102.132.19 |
| SPF_IP | 66.102.132.245 |
| SPF_IP | 69.90.160.110 |
| SPF_MX | gcastro.ca |
Related pages
Pivot deeper into the graph from gcastro.ca.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "gcastro.ca"})-[: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.