# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2023, American Registry for Internet Numbers, Ltd. # NetRange: 10.0.0.0 - 10.255.255.255 CIDR: 10.0.0.0/8 NetName: PRIVATE-ADDRESS-ABLK-RFC1918-IANA-RESERVED NetHandle: NET-10-0-0-0-1 Parent: () NetType: IANA Special Use OriginAS: Organization: Internet Assigned Numbers Authority (IANA) RegDate: Updated: 2013-08-30 Comment: These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices. They are only intended for use within a private context and traffic that needs to cross the Internet will need to use a different, unique address. Comment: Comment: These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry. The traffic from these addresses does not come from ICANN or IANA. We are not the source of activity you may see on logs or in e-mail records. Please refer to http://www.iana.org/abuse/answers Comment: Comment: These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at: Comment: http://datatracker.ietf.org/doc/rfc1918 Ref: https://rdap.arin.net/registry/ip/10.0.0.0 OrgName: Internet Assigned Numbers Authority OrgId: IANA Address: 12025 Waterfront Drive Address: Suite 300 City: Los Angeles StateProv: CA PostalCode: 90292 Country: US RegDate: Updated: 2012-08-31 Ref: https://rdap.arin.net/registry/entity/IANA OrgTechHandle: IANA-IP-ARIN OrgTechName: ICANN OrgTechPhone: +1-310-301-5820 OrgTechEmail: abuse@iana.org OrgTechRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN OrgAbuseHandle: IANA-IP-ARIN OrgAbuseName: ICANN OrgAbusePhone: +1-310-301-5820 OrgAbuseEmail: abuse@iana.org OrgAbuseRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2023, American Registry for Internet Numbers, Ltd. #

Host 21.7.53.10.in-addr.arpa. not found: 3(NXDOMAIN)

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.9 <<>> 10.53.7.21 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10705 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;10.53.7.21. IN A ;; AUTHORITY SECTION: . 86379 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2023060700 1800 900 604800 86400 ;; Query time: 4 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Wed Jun 07 12:52:03 UTC 2023 ;; MSG SIZE rcvd: 114

** server can't find 21.7.53.10.in-addr.arpa.: NXDOMAIN

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