Robtex

Up: 173.255.96.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.255.104.0/22
Down right: 173.255.108.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.255.104.2	A	173-255-104-2.utilitytelephone.net
173.255.104.3	A+PTR	mail.herricksteel.com
173.255.104.3	A	owa.herricksteel.com
173.255.104.18	A	mail.kirschenmann.com
173.255.104.27	PTR	mail.vinotheque.com
173.255.104.27	A	173-255-104-27.utilitytelephone.net
173.255.104.38	A	173-255-104-38.utilitytelephone.net
173.255.104.47	A	173-255-104-47.utilitytelephone.net
173.255.104.50	A	mail.lakeviewpetroleum.com
173.255.104.58	A+PTR	173-255-104-58.utilitytelephone.net
173.255.104.66	A+PTR	mail.caladmanagement.com
173.255.104.83	A+PTR	173-255-104-83.utilitytelephone.net
173.255.104.90	A+PTR	173-255-104-90.utilitytelephone.net
173.255.104.91	A	email.lawsonmechanical.com
173.255.104.92	A	mail.lawsonmechanical.com
173.255.104.122	A+PTR	173-255-104-122.utilitytelephone.net
173.255.104.124	A	173-255-104-124.utilitytelephone.net
173.255.104.138	A	173-255-104-138.utilitytelephone.net
173.255.104.154	A+PTR	173-255-104-154.utilitytelephone.net
173.255.104.164	A	mail.arlenness.com
173.255.104.165	A	173-255-104-165.utilitytelephone.net
173.255.104.177	A+PTR	173-255-104-177.utilitytelephone.net
173.255.104.178	A+PTR	173-255-104-178.utilitytelephone.net
173.255.104.187	A+PTR	173-255-104-187.utilitytelephone.net
173.255.105.38	A	173-255-105-38.utilitytelephone.net
173.255.105.50	A+PTR	173-255-105-50.utilitytelephone.net
173.255.105.86	A	173-255-105-86.utilitytelephone.net
173.255.105.98	A	calbennetts.com
173.255.105.114	A+PTR	173-255-105-114.utilitytelephone.net
173.255.105.117	A	173-255-105-117.utilitytelephone.net
173.255.105.182	A	173-255-105-182.utilitytelephone.net
173.255.105.225	A	mail.geotech-services.com
173.255.105.225	A	173-255-105-225.utilitytelephone.net
173.255.105.226	A+PTR	173-255-105-226.utilitytelephone.net
173.255.105.241	A+PTR	173-255-105-241.utilitytelephone.net
173.255.105.243	A+PTR	173-255-105-243.utilitytelephone.net
173.255.105.244	A	173-255-105-244.utilitytelephone.net
173.255.106.35	A	173-255-106-35.utilitytelephone.net
173.255.106.37	A	173-255-106-37.utilitytelephone.net
173.255.106.42	A	mail.marroenterprises.com
173.255.106.58	A	173-255-106-58.utilitytelephone.net
173.255.106.67	A+PTR	173-255-106-67.utilitytelephone.net
173.255.106.67	A	mail.riverwalkma.com
173.255.106.71	A	173-255-106-71.utilitytelephone.net
173.255.106.84	A	173-255-106-84.utilitytelephone.net
173.255.106.114	PTR	173-255-106-114.utilitytelephone.net
173.255.106.114	A	vetlis.com
173.255.106.114	A	schuynet.net
173.255.106.123	A	mail.nepenthebigsur.com
173.255.106.133	A	hdcusa.net
173.255.106.133	A	173-255-106-133.utilitytelephone.net
173.255.106.178	A+PTR	mail.vie-del.com
173.255.106.178	A	vie-del.com
173.255.106.213	A	173-255-106-213.utilitytelephone.net
173.255.106.218	A+PTR	173-255-106-218.utilitytelephone.net
173.255.106.226	A	173-255-106-226.utilitytelephone.net
173.255.106.247	A	173-255-106-247.utilitytelephone.net
173.255.106.250	PTR	173-255-106-250.utilitytelephone.net
173.255.106.250	A	mail.eberlewinery.com
173.255.107.6	PTR	173-255-107-6.utilitytelephone.net
173.255.107.201	A	173-255-107-201.utilitytelephone.net
173.255.107.215	A+PTR	173-255-107-215.utilitytelephone.net
173.255.108.1	A+PTR	173-255-108-1.utilitytelephone.net
173.255.108.2	A+PTR	173-255-108-2.utilitytelephone.net
173.255.108.4	A	173-255-108-4.utilitytelephone.net
173.255.108.7	A	173-255-108-7.utilitytelephone.net
173.255.108.10	A+PTR	173-255-108-10.utilitytelephone.net
173.255.108.11	A+PTR	173-255-108-11.utilitytelephone.net
173.255.108.15	A	173-255-108-15.utilitytelephone.net
173.255.108.22	A	173-255-108-22.utilitytelephone.net
173.255.108.23	A	173-255-108-23.utilitytelephone.net
173.255.108.32	A+PTR	173-255-108-32.utilitytelephone.net
173.255.108.36	A	173-255-108-36.utilitytelephone.net
173.255.108.44	A	173-255-108-44.utilitytelephone.net
173.255.108.46	A	173-255-108-46.utilitytelephone.net
173.255.108.56	A+PTR	173-255-108-56.utilitytelephone.net
173.255.108.64	A+PTR	173-255-108-64.utilitytelephone.net
173.255.108.66	A+PTR	173-255-108-66.utilitytelephone.net
173.255.108.67	A+PTR	173-255-108-67.utilitytelephone.net
173.255.108.76	A	173-255-108-76.utilitytelephone.net
173.255.108.79	A	173-255-108-79.utilitytelephone.net
173.255.108.88	A+PTR	173-255-108-88.utilitytelephone.net
173.255.108.89	A+PTR	173-255-108-89.utilitytelephone.net
173.255.108.97	A+PTR	173-255-108-97.utilitytelephone.net
173.255.108.106	A+PTR	173-255-108-106.utilitytelephone.net
173.255.108.111	A	173-255-108-111.utilitytelephone.net
173.255.108.115	A+PTR	173-255-108-115.utilitytelephone.net
173.255.108.116	A	173-255-108-116.utilitytelephone.net
173.255.108.120	A+PTR	173-255-108-120.utilitytelephone.net
173.255.108.126	A	173-255-108-126.utilitytelephone.net
173.255.108.130	A+PTR	173-255-108-130.utilitytelephone.net
173.255.108.136	A+PTR	173-255-108-136.utilitytelephone.net
173.255.108.137	A+PTR	173-255-108-137.utilitytelephone.net
173.255.108.146	A+PTR	173-255-108-146.utilitytelephone.net
173.255.108.147	A+PTR	173-255-108-147.utilitytelephone.net
173.255.108.159	A	173-255-108-159.utilitytelephone.net
173.255.108.164	A	173-255-108-164.utilitytelephone.net
173.255.108.171	A+PTR	173-255-108-171.utilitytelephone.net
173.255.108.172	A	173-255-108-172.utilitytelephone.net
173.255.108.181	A	173-255-108-181.utilitytelephone.net
173.255.108.188	A	173-255-108-188.utilitytelephone.net
173.255.108.190	A	173-255-108-190.utilitytelephone.net
173.255.108.199	A	173-255-108-199.utilitytelephone.net
173.255.108.202	A+PTR	173-255-108-202.utilitytelephone.net
173.255.108.208	A+PTR	173-255-108-208.utilitytelephone.net
173.255.108.211	A+PTR	173-255-108-211.utilitytelephone.net
173.255.108.213	A	173-255-108-213.utilitytelephone.net
173.255.108.230	A	173-255-108-230.utilitytelephone.net
173.255.108.234	A+PTR	173-255-108-234.utilitytelephone.net
173.255.108.237	A	173-255-108-237.utilitytelephone.net
173.255.108.239	A	173-255-108-239.utilitytelephone.net
173.255.108.240	A+PTR	173-255-108-240.utilitytelephone.net
173.255.108.246	A	173-255-108-246.utilitytelephone.net
173.255.108.251	A+PTR	173-255-108-251.utilitytelephone.net
173.255.109.38	A	mail.uc-won.com
173.255.109.38	A	mail.arkablue.com
173.255.109.38	A	uc-won.com
173.255.109.146	A+PTR	173-255-109-146.utilitytelephone.net
173.255.109.146	A	mail.vesselsofhonor.com
173.255.109.213	A	hamrepeater.org
173.255.109.230	A	mail.partnerwithdp.com
173.255.109.234	PTR	173-255-109-234.utilitytelephone.net
173.255.109.234	A	apollo.autolinesorters.com
173.255.109.234	A	autolinesorters.com
173.255.109.235	PTR	173-255-109-235.utilitytelephone.net
173.255.110.108	A	173-255-110-108.utilitytelephone.net
173.255.110.202	A	mail.cedsb.com
173.255.110.242	A+PTR	173-255-110-242.utilitytelephone.net