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: 3.160.22.22
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.49
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.10
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 3.160.22.47
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:6600:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:b000:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:fe00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:9400:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:9800:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:bc00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:4e00:11:2451:2fc0:93a1
Name:	d2o0vml6p83nb3.cloudfront.net
Address: 2600:9000:25f3:2a00:11:2451:2fc0:93a1