Robtex

Up: 13.107.24.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 13.107.24.0/26
Down right: 13.107.24.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.107.24.1	A+PTR	ns3-01.azure-dns.org
13.107.24.1	A	ns3-01.mono-for-android.net.msft.info
13.107.24.1	A	ns3-01.utilityhpc.net.msft.info
13.107.24.2	A+PTR	ns3-02.azure-dns.org
13.107.24.2	A	ns1prod.6913.azuredns-prd.info
13.107.24.2	A	ns1prod.205.azuredns-prd.info
13.107.24.3	PTR	ns3-03.azure-dns.org
13.107.24.3	A	ns3-03.goodbeecredit.ro
13.107.24.3	A	ns1prod.8409.azuredns-prd.info
13.107.24.4	PTR	ns3-04.azure-dns.org
13.107.24.4	A	ns1prod.172.azuredns-prd.info
13.107.24.4	A	ns3-04.agnitio.net.msft.info
13.107.24.5	PTR	ns3-05.azure-dns.org
13.107.24.5	A	ns1prod.10882.azuredns-prd.info
13.107.24.5	A	ns1prod.227.azuredns-prd.info
13.107.24.6	A+PTR	ns3-06.azure-dns.org
13.107.24.6	A	ns1prod.6893.azuredns-prd.info
13.107.24.6	A	ns1prod.11193.azuredns-prd.info
13.107.24.7	A+PTR	ns3-07.azure-dns.org
13.107.24.7	A	ns3-07.o365wpa.com.msft.info
13.107.24.7	A	ns1prod.203.azuredns-prd.info
13.107.24.8	A+PTR	ns3-08.azure-dns.org
13.107.24.8	A	ns3-08.swiftkeyhealthcare.com.msft.info
13.107.24.8	A	ns1prod.5611.azuredns-prd.info
13.107.24.9	A+PTR	ns3-09.azure-dns.org
13.107.24.9	A	ns3-09.microsoftsecurity.se.msft.info
13.107.24.9	A	ns3-09.ceipmsn.com.msft.info
13.107.24.10	A+PTR	ns3-10.azure-dns.org