shell:$ nslookup -timeout=2 -retry=1 'biz.libretexts.org'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
biz.libretexts.org	canonical name = d2o0vml6p83nb3.cloudfront.net.
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 108.159.227.50
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 108.159.227.69
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 108.159.227.100
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 108.159.227.84
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:6c00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:f400:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:3800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:d800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:8e00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:6a00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:4000:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:233d:d200:11:2451:2fc0:93a1