Robtex

Up: 208.54.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.54.72.0/22
Down right: 208.54.76.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.54.73.1	PTR	m014936d0.tmodns.net
208.54.73.1	A	bootstrap-ipsecrouter1.smallcell.t-mobile.com
208.54.73.3	PTR	m034936d0.tmodns.net
208.54.73.3	A	initial-ipsecrouter.smallcell.t-mobile.com
208.54.73.5	A	serving1tep1-4sgwdal21-22.smallcell.t-mobile.com
208.54.73.7	A	serving1tep1-4sgwdal21-22.smallcell.t-mobile.com
208.54.73.9	A	serving1tep1-4sgwdal21-22.smallcell.t-mobile.com
208.54.73.11	A	serving1tep1-4sgwdal21-22.smallcell.t-mobile.com
208.54.73.70	A	elg.speedtest.t-mobile.com
208.54.73.72	A+PTR	m484936d0.tmodns.net
208.54.73.75	A+PTR	m4b4936d0.tmodns.net
208.54.73.76	A	m4c4936d0.tmodns.net
208.54.73.77	A	m4d4936d0.tmodns.net
208.54.74.30	A	ttn.speedtest.t-mobile.com
208.54.74.36	A	m244a36d0.tmodns.net
208.54.74.36	A	psgw.t-mobilesgws.com
208.54.74.36	A	sam.t-mobilesgws.com
208.54.74.37	A	psgw.t-mobilesgws.com
208.54.74.37	A	sam.t-mobilesgws.com
208.54.74.37	A	m254a36d0.tmodns.net
208.54.74.42	A+PTR	m2a4a36d0.tmodns.net
208.54.74.42	A	psgw.t-mobilesgws.com
208.54.74.42	A	sam.t-mobilesgws.com
208.54.74.43	A+PTR	m2b4a36d0.tmodns.net
208.54.74.43	A	psgw.t-mobilesgws.com
208.54.74.43	A	sam.t-mobilesgws.com
208.54.74.98	A+PTR	m624a36d0.tmodns.net
208.54.74.101	A	m654a36d0.tmodns.net
208.54.74.104	A+PTR	m684a36d0.tmodns.net
208.54.74.107	A+PTR	m6b4a36d0.tmodns.net
208.54.74.110	A	m6e4a36d0.tmodns.net
208.54.74.113	A+PTR	m714a36d0.tmodns.net
208.54.74.116	A	m744a36d0.tmodns.net
208.54.74.128	PTR	m804a36d0.tmodns.net
208.54.74.131	A+PTR	m834a36d0.tmodns.net
208.54.74.139	PTR	m8b4a36d0.tmodns.net
208.54.74.158	A	m9e4a36d0.tmodns.net
208.54.74.204	A	r1.sn-uhvcpax0n5-q4fl.a1.googlevideo.com
208.54.74.204	A	r1.sn-uhvcpax0n5-q4fl.gvt1.com
208.54.74.204	A	r1.sn-uhvcpax0n5-q4fl.c.pack.google.com
208.54.74.208	PTR	md04a36d0.tmodns.net
208.54.74.208	A	r5---sn-uhvcpax0n5-q4fl.googlevideo.com
208.54.74.208	A	r5.sn-uhvcpax0n5-q4fl.a1.googlevideo.com
208.54.74.209	PTR	md14a36d0.tmodns.net
208.54.74.218	PTR	mda4a36d0.tmodns.net
208.54.74.227	A	me34a36d0.tmodns.net
208.54.75.0	A	m004b36d0.tmodns.net
208.54.75.1	A	m014b36d0.tmodns.net
208.54.75.2	A	m024b36d0.tmodns.net
208.54.75.20	A	sbaelg50asbc.sip.t-mobile.com
208.54.75.74	A+PTR	m4a4b36d0.tmodns.net
208.54.75.86	A	m564b36d0.tmodns.net
208.54.75.91	A+PTR	m5b4b36d0.tmodns.net
208.54.75.91	A	sba.sipgeo.t-mobile.com
208.54.75.94	A	sba.sipgeo.t-mobile.com
208.54.75.94	A	m5e4b36d0.tmodns.net
208.54.75.97	A+PTR	m614b36d0.tmodns.net
208.54.75.197	A	bootstrap-ipsecrouter1.smallcell.t-mobile.com
208.54.75.199	A	initial-ipsecrouter.smallcell.t-mobile.com
208.54.76.0	A	m004c36d0.tmodns.net
208.54.76.226	A+PTR	me24c36d0.tmodns.net
208.54.77.2	PTR	m024d36d0.tmodns.net
208.54.77.236	A	mec4d36d0.tmodns.net
208.54.77.251	A+PTR	mfb4d36d0.tmodns.net
208.54.77.252	A	mfc4d36d0.tmodns.net
208.54.77.253	A	mfd4d36d0.tmodns.net
208.54.77.254	A	mfe4d36d0.tmodns.net