Robtex

Up: 13.107.160.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 13.107.160.0/24
Down right: 13.107.161.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.107.160.1	A+PTR	ns4-01.azure-dns.info
13.107.160.1	A	ns2prod.10219.azuredns-prd.info
13.107.160.1	A	ns4-01.mono-for-android.net.msftnet.org
13.107.160.2	A+PTR	ns4-02.azure-dns.info
13.107.160.2	A	ns6.eastech.com.hk
13.107.160.2	A	ns2prod.39626.azuredns-prd.info
13.107.160.3	PTR	ns4-03.azure-dns.info
13.107.160.4	PTR	ns4-04.azure-dns.info
13.107.160.4	A	ns4-04.agnitio.net.msftnet.org
13.107.160.4	A	ns2prod.196.azuredns-prd.info
13.107.160.5	PTR	ns4-05.azure-dns.info
13.107.160.6	A+PTR	ns4-06.azure-dns.info
13.107.160.6	A	ns4-06.ozwald.biz.msftnet.org
13.107.160.6	A	ns2prod.6893.azuredns-prd.info
13.107.160.7	PTR	ns4-07.azure-dns.info
13.107.160.8	A+PTR	ns4-08.azure-dns.info
13.107.160.8	A	ns4-08.swiftkeyhealthcare.com.msftnet.org
13.107.160.8	A	ns6.hpservice.com.hk
13.107.160.9	PTR	ns4-09.azure-dns.info
13.107.160.10	A+PTR	ns4-10.azure-dns.info
13.107.160.201	A+PTR	ns4-201.azure-dns.info
13.107.160.201	A	ns4.azprdmig.msft.net
13.107.160.201	A	ns2prod.6619.azuredns-prd.info
13.107.160.202	A+PTR	ns4-202.azure-dns.info
13.107.160.203	A+PTR	ns4-203.azure-dns.info
13.107.160.204	A+PTR	ns4-204.azure-dns.info
13.107.160.205	PTR	ns4-205.azure-dns.info
13.107.160.205	A	ns4-205.msftncsi.com.msftnet.org
13.107.160.205	A	ns4-205.skype.com.msftnet.org
13.107.160.208	A+PTR	ns4-208.azure-dns.info
13.107.160.208	A	enewcarriercom.cl
13.107.160.208	A	ns4.bdm.microsoftonline.com
13.107.160.221	A	ns4-221.azure-dns.info
13.107.160.221	A	ns4.sharepoint.com.msftnet.org
13.107.160.224	A	ns2prod.122.azuredns-prd.info
13.107.160.224	A	ns2prod.41087.azuredns-prd.info
13.107.160.224	A	ns4-224.azure-dns.info
13.107.160.225	A	ns4-225.azure-dns.info