Robtex

Up: 72.1.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.1.168.0/23
Down right: 72.1.170.0/23

IP	Type	Hostname
72.1.168.1	A+PTR	dsl001-168-001.bos1.dsl.speakeasy.net
72.1.168.2	A+PTR	dsl001-168-002.bos1.dsl.speakeasy.net
72.1.168.8	PTR	dsl001-168-008.bos1.dsl.speakeasy.net
72.1.168.14	A+PTR	dsl001-168-014.bos1.dsl.speakeasy.net
72.1.168.18	A+PTR	dsl001-168-018.bos1.dsl.speakeasy.net
72.1.168.19	A+PTR	dsl001-168-019.bos1.dsl.speakeasy.net
72.1.168.22	A+PTR	dsl001-168-022.bos1.dsl.speakeasy.net
72.1.168.29	A+PTR	dsl001-168-029.bos1.dsl.speakeasy.net
72.1.168.30	A+PTR	dsl001-168-030.bos1.dsl.speakeasy.net
72.1.168.39	A+PTR	dsl001-168-039.bos1.dsl.speakeasy.net
72.1.168.42	A+PTR	dsl001-168-042.bos1.dsl.speakeasy.net
72.1.168.44	A+PTR	dsl001-168-044.bos1.dsl.speakeasy.net
72.1.168.48	PTR	dsl001-168-048.bos1.dsl.speakeasy.net
72.1.168.59	A+PTR	dsl001-168-059.bos1.dsl.speakeasy.net
72.1.168.69	A+PTR	dsl001-168-069.bos1.dsl.speakeasy.net
72.1.168.83	PTR	dsl001-168-083.bos1.dsl.speakeasy.net
72.1.168.85	PTR	dsl001-168-085.bos1.dsl.speakeasy.net
72.1.168.87	A+PTR	dsl001-168-087.bos1.dsl.speakeasy.net
72.1.168.94	PTR	dsl001-168-094.bos1.dsl.speakeasy.net
72.1.168.100	A+PTR	dsl001-168-100.bos1.dsl.speakeasy.net
72.1.168.101	A+PTR	dsl001-168-101.bos1.dsl.speakeasy.net
72.1.168.115	A+PTR	dsl001-168-115.bos1.dsl.speakeasy.net
72.1.168.159	A+PTR	dsl001-168-159.bos1.dsl.speakeasy.net
72.1.168.192	A+PTR	dsl001-168-192.bos1.dsl.speakeasy.net
72.1.168.255	A+PTR	dsl001-168-255.bos1.dsl.speakeasy.net
72.1.169.0	PTR	dsl001-169-000.bos1.dsl.speakeasy.net
72.1.169.26	PTR	dsl001-169-026.bos1.dsl.speakeasy.net
72.1.169.32	A+PTR	dsl001-169-032.bos1.dsl.speakeasy.net
72.1.169.33	A+PTR	dsl001-169-033.bos1.dsl.speakeasy.net
72.1.169.34	A+PTR	dsl001-169-034.bos1.dsl.speakeasy.net
72.1.169.42	PTR	dsl001-169-042.bos1.dsl.speakeasy.net
72.1.169.43	A+PTR	dsl001-169-043.bos1.dsl.speakeasy.net
72.1.169.45	A+PTR	dsl001-169-045.bos1.dsl.speakeasy.net
72.1.169.53	A+PTR	dsl001-169-053.bos1.dsl.speakeasy.net
72.1.169.60	PTR	dsl001-169-060.bos1.dsl.speakeasy.net
72.1.169.65	A+PTR	dsl001-169-065.bos1.dsl.speakeasy.net
72.1.169.73	A+PTR	dsl001-169-073.bos1.dsl.speakeasy.net
72.1.169.81	PTR	dsl001-169-081.bos1.dsl.speakeasy.net
72.1.169.82	PTR	dsl001-169-082.bos1.dsl.speakeasy.net
72.1.169.88	A+PTR	dsl001-169-088.bos1.dsl.speakeasy.net
72.1.169.89	A+PTR	dsl001-169-089.bos1.dsl.speakeasy.net
72.1.169.102	A+PTR	dsl001-169-102.bos1.dsl.speakeasy.net
72.1.169.110	A+PTR	dsl001-169-110.bos1.dsl.speakeasy.net
72.1.169.120	A+PTR	dsl001-169-120.bos1.dsl.speakeasy.net
72.1.169.134	A+PTR	dsl001-169-134.bos1.dsl.speakeasy.net
72.1.169.136	A+PTR	dsl001-169-136.bos1.dsl.speakeasy.net
72.1.169.242	A+PTR	dsl001-169-242.bos1.dsl.speakeasy.net
72.1.169.255	PTR	dsl001-169-255.bos1.dsl.speakeasy.net
72.1.170.1	A+PTR	dsl001-170-001.nyc1.dsl.speakeasy.net
72.1.170.3	PTR	dsl001-170-003.nyc1.dsl.speakeasy.net
72.1.170.4	A+PTR	dsl001-170-004.nyc1.dsl.speakeasy.net
72.1.170.14	PTR	dsl001-170-014.nyc1.dsl.speakeasy.net
72.1.170.18	PTR	dsl001-170-018.nyc1.dsl.speakeasy.net
72.1.170.23	PTR	dsl001-170-023.nyc1.dsl.speakeasy.net
72.1.170.29	PTR	dsl001-170-029.nyc1.dsl.speakeasy.net
72.1.170.30	A+PTR	dsl001-170-030.nyc1.dsl.speakeasy.net
72.1.170.43	A	hmartdirect.com
72.1.170.48	PTR	dsl001-170-048.nyc1.dsl.speakeasy.net
72.1.170.57	A+PTR	dsl001-170-057.nyc1.dsl.speakeasy.net
72.1.170.74	A+PTR	dsl001-170-074.nyc1.dsl.speakeasy.net
72.1.170.84	A+PTR	dsl001-170-084.nyc1.dsl.speakeasy.net
72.1.170.89	PTR	dsl001-170-089.nyc1.dsl.speakeasy.net
72.1.170.90	PTR	dsl001-170-090.nyc1.dsl.speakeasy.net
72.1.170.97	PTR	dsl001-170-097.nyc1.dsl.speakeasy.net
72.1.170.110	A+PTR	dsl001-170-110.nyc1.dsl.speakeasy.net
72.1.170.111	A+PTR	dsl001-170-111.nyc1.dsl.speakeasy.net
72.1.170.143	A+PTR	dsl001-170-143.nyc1.dsl.speakeasy.net
72.1.170.148	A+PTR	dsl001-170-148.nyc1.dsl.speakeasy.net
72.1.170.159	A+PTR	dsl001-170-159.nyc1.dsl.speakeasy.net
72.1.170.204	A+PTR	dsl001-170-204.nyc1.dsl.speakeasy.net
72.1.170.209	A+PTR	dsl001-170-209.nyc1.dsl.speakeasy.net
72.1.170.226	A+PTR	dsl001-170-226.nyc1.dsl.speakeasy.net
72.1.170.240	A+PTR	dsl001-170-240.nyc1.dsl.speakeasy.net