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Hostname

cal4us.app

Last fetched

cal4us.app resolves to 12 IPv4 addresses operated by AMAZON-02 - Amazon.com, Inc. in SG. WHOIS lists iana:895 as the registrar.

Nutrition Label

WHISPER CANON · cal4us.appRouting diversity3.0/10Peering density9.5/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint4.6/10canon.whisper.security/host/cal4us.app

Resolution chain

cal4us.app resolves to 12 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
108.159.15.2108.159.12.0/22AS16509AMAZON-02 - Amazon.com, Inc.SG
108.159.15.25108.159.12.0/22AS16509AMAZON-02 - Amazon.com, Inc.SG
108.159.15.5108.159.12.0/22AS16509AMAZON-02 - Amazon.com, Inc.SG
108.159.15.78108.159.12.0/22AS16509AMAZON-02 - Amazon.com, Inc.SG
13.33.235.10113.33.232.0/21AS16509AMAZON-02 - Amazon.com, Inc.FI
13.33.235.1313.33.232.0/21AS16509AMAZON-02 - Amazon.com, Inc.FI
13.33.235.5113.33.232.0/21AS16509AMAZON-02 - Amazon.com, Inc.FI
13.33.235.9313.33.232.0/21AS16509AMAZON-02 - Amazon.com, Inc.FI
18.67.181.12318.67.180.0/22AS16509AMAZON-02 - Amazon.com, Inc.MY
18.67.181.2518.67.180.0/22AS16509AMAZON-02 - Amazon.com, Inc.MY
18.67.181.5518.67.180.0/22AS16509AMAZON-02 - Amazon.com, Inc.MY
18.67.181.5618.67.180.0/22AS16509AMAZON-02 - Amazon.com, Inc.MY

WHOIS identity

Registrar
iana:895
Organization
—
Contact emails
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Subdomains

3 observed subdomains of cal4us.app.

Subdomain
api.cal4us.app
caldav.cal4us.app
www.cal4us.app

Threat posture

History

Related pages

Pivot deeper into the graph from cal4us.app.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "cal4us.app"})-[: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.