You use IPv4 protocol.
http://www.polarhome.com supports IPv6 too.

Hostname=
IP address=44.197.101.251

ISP information:





Connection information:
Connection=Keep-Alive
User agent=CCBot/2.0 (https://commoncrawl.org/faq/)
Remote port=45304
Server port=80
Protocol=HTTP/1.1
Language=en-US,en;q=0.5
Request=GET

nslookup response:
Server:		192.168.10.1
Address:	192.168.10.1#53

Non-authoritative answer:
251.101.197.44.in-addr.arpa	name = ec2-44-197-101-251.compute-1.amazonaws.com.

Authoritative answers can be found from:

dig -x response:

; <<>> DiG 9.8.4-P1-RedHat-9.8.4-3.P1.fc16 <<>> -x 44.197.101.251
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10018
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;251.101.197.44.in-addr.arpa.	IN	PTR

;; ANSWER SECTION:
251.101.197.44.in-addr.arpa. 300 IN	PTR	ec2-44-197-101-251.compute-1.amazonaws.com.

;; AUTHORITY SECTION:
101.197.44.in-addr.arpa. 300	IN	NS	ns4-24-us-east-1.ec2-rdns.amazonaws.com.
101.197.44.in-addr.arpa. 300	IN	NS	ns2-24-us-east-1.ec2-rdns.amazonaws.com.
101.197.44.in-addr.arpa. 300	IN	NS	ns1-24-us-east-1.ec2-rdns.amazonaws.com.
101.197.44.in-addr.arpa. 300	IN	NS	ns3-24-us-east-1.ec2-rdns.amazonaws.com.

;; ADDITIONAL SECTION:
ns1-24-us-east-1.ec2-rdns.amazonaws.com. 300 IN	A 205.251.197.231
ns2-24-us-east-1.ec2-rdns.amazonaws.com. 300 IN	A 205.251.198.46
ns3-24-us-east-1.ec2-rdns.amazonaws.com. 300 IN	A 205.251.192.197
ns4-24-us-east-1.ec2-rdns.amazonaws.com. 300 IN	A 205.251.195.169

;; Query time: 121 msec
;; SERVER: 192.168.10.36#53(192.168.10.36)
;; WHEN: Wed Dec  6 08:30:02 2023
;; MSG SIZE  rcvd: 298

dig A response:

; <<>> DiG 9.8.4-P1-RedHat-9.8.4-3.P1.fc16 <<>> A 44.197.101.251
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 38410
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;44.197.101.251.			IN	A

;; AUTHORITY SECTION:
.			10800	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2023120600 1800 900 604800 86400

;; Query time: 77 msec
;; SERVER: 192.168.10.36#53(192.168.10.36)
;; WHEN: Wed Dec  6 08:30:02 2023
;; MSG SIZE  rcvd: 107