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Hostname

d21.co.jp

Last fetched

d21.co.jp resolves to 20 IPv4 addresses operated by AMAZON-02 - Amazon.com, Inc. in JP.

Nutrition Label

WHISPER CANON · d21.co.jpRouting diversity5.4/10Peering density9.5/10MOAS conflict✓ noneThreat-feed listings8.0/10WHOIS transparency3.3/10Resolver footprint5.2/10canon.whisper.security/host/d21.co.jp

Resolution chain

d21.co.jp resolves to 20 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
175.41.218.114175.41.192.0/18AS16509AMAZON-02 - Amazon.com, Inc.JP
18.178.10.16718.178.0.0/16AS16509AMAZON-02 - Amazon.com, Inc.JP
35.73.122.7935.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.73.147.7135.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.73.29.5735.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.73.93.4435.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.75.123.11435.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.75.190.25135.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
35.75.245.24035.72.0.0/13AS16509AMAZON-02 - Amazon.com, Inc.JP
43.206.25.16943.206.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
43.206.34.9243.206.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
43.207.24.6643.206.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
52.193.116.6252.192.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
52.193.7.3752.192.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
52.193.91.17952.192.0.0/15AS16509AMAZON-02 - Amazon.com, Inc.JP
52.196.211.3252.196.0.0/14AS16509AMAZON-02 - Amazon.com, Inc.JP
52.199.156.18752.196.0.0/14AS16509AMAZON-02 - Amazon.com, Inc.JP
52.199.59.16352.196.0.0/14AS16509AMAZON-02 - Amazon.com, Inc.JP
54.248.81.1454.248.0.0/17AS16509AMAZON-02 - Amazon.com, Inc.JP
54.248.88.16254.248.0.0/17AS16509AMAZON-02 - Amazon.com, Inc.JP

WHOIS identity

Registrar
—
Organization
discover 21,inc.
Contact emails
—

Subdomains

5 observed subdomains of d21.co.jp.

Subdomain
cn.d21.co.jp
coach.d21.co.jp
dev-coach.d21.co.jp
en.d21.co.jp
www.d21.co.jp

Web-graph footprint

Distinct hostnames that link to or from d21.co.jp in the public web crawl.

723 sites link to this hostname.

65 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

24 SPF mechanisms authorising senders for d21.co.jp.

MechanismTarget
SPF_INCLUDE_spf.google.com
SPF_INCLUDEamazonses.com
SPF_INCLUDEspf.eco-serv.jp
SPF_INCLUDEspf.form.run
SPF_INCLUDEspf.haihaimail.jp
SPF_IP122.248.228.249/32
SPF_IP124.248.144.0/20
SPF_IP133.125.32.0/19
SPF_IP133.167.0.0/17
SPF_IP133.18.0.0/16
SPF_IP133.242.128.0/17
SPF_IP153.120.0.0/17
SPF_IP153.121.64.0/20
SPF_IP153.126.128.0/17
SPF_IP153.127.0.0/17
SPF_IP153.127.108.0/24
SPF_IP153.127.128.0/17
SPF_IP160.16.0.0/16
SPF_IP175.41.176.166/32
SPF_IP182.48.32.0/20
SPF_IP219.94.192.0/18
SPF_IP49.212.128.0/18
SPF_IP59.106.128.0/18
SPF_MXd21.co.jp

Related pages

Pivot deeper into the graph from d21.co.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "d21.co.jp"})-[: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.