shell:$ nslookup -timeout=2 -retry=1 'checkout-sdk.sezzle.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	checkout-sdk.sezzle.com
Address: 143.204.204.26
Name:	checkout-sdk.sezzle.com
Address: 143.204.204.97
Name:	checkout-sdk.sezzle.com
Address: 143.204.204.23
Name:	checkout-sdk.sezzle.com
Address: 143.204.204.77
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:3e00:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:7000:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:e400:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:a200:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:6c00:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:2800:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:dc00:0:8879:1f00:93a1
Name:	checkout-sdk.sezzle.com
Address: 2600:9000:2058:8400:0:8879:1f00:93a1