Robtex

Up: 150.170.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 150.171.0.0/17
Down right: 150.171.128.0/17

IP	Type	Hostname
150.171.0.1	A	ns4-ms-acdc-sdf.office.com
150.171.0.2	A	ns4-ms-acdc.office.com
150.171.10.32	A+PTR	ns1-32.azure-dns.com
150.171.10.34	A	ns1-34.azure-dns.com
150.171.10.36	A	ns1-36.azure-dns.com
150.171.10.38	A	ns1-38.azure-dns.com
150.171.11.34	A	ns5-34.azure-dns.com
150.171.16.32	A	ns2-32.azure-dns.net
150.171.16.34	A	ns2-34.azure-dns.net
150.171.16.36	A	ns2-36.azure-dns.net
150.171.16.38	A+PTR	ns2-38.azure-dns.net
150.171.40.11	A	spo-0006.dc-msedge.net
150.171.40.13	A	spo-0008.dc-msedge.net
150.171.41.11	A	spov-0006.dc-msedge.net
150.171.254.1	A	ns3-ms-acdc-sdf.office.com
150.171.254.2	A	ns3-ms-acdc.office.com