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: 3.160.22.47
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.49
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.10
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.22
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:8800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:ac00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:6000:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:da00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:5800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:ce00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:7800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:ae00:11:2451:2fc0:93a1