Robtex

Up: 66.81.199.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 66.81.199.64/27
Down right: 66.81.199.96/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.81.199.64	PTR	66-81-199-64.socal.dialup.o1.com
66.81.199.64	A	ns100.rookdns.com
66.81.199.64	A	purenudismo.com
66.81.199.65	PTR	66-81-199-65.socal.dialup.o1.com
66.81.199.66	PTR	66-81-199-66.socal.dialup.o1.com
66.81.199.67	PTR	66-81-199-67.socal.dialup.o1.com
66.81.199.68	PTR	66-81-199-68.socal.dialup.o1.com
66.81.199.69	PTR	66-81-199-69.socal.dialup.o1.com
66.81.199.70	PTR	66-81-199-70.socal.dialup.o1.com
66.81.199.71	PTR	66-81-199-71.socal.dialup.o1.com
66.81.199.72	PTR	66-81-199-72.socal.dialup.o1.com
66.81.199.72	A	ns6.dsredirection.com
66.81.199.73	PTR	66-81-199-73.socal.dialup.o1.com
66.81.199.74	PTR	66-81-199-74.socal.dialup.o1.com
66.81.199.75	PTR	66-81-199-75.socal.dialup.o1.com
66.81.199.76	PTR	66-81-199-76.socal.dialup.o1.com
66.81.199.77	PTR	66-81-199-77.socal.dialup.o1.com
66.81.199.78	PTR	66-81-199-78.socal.dialup.o1.com
66.81.199.79	PTR	66-81-199-79.socal.dialup.o1.com
66.81.199.80	PTR	66-81-199-80.socal.dialup.o1.com
66.81.199.81	PTR	66-81-199-81.socal.dialup.o1.com
66.81.199.82	PTR	66-81-199-82.socal.dialup.o1.com
66.81.199.83	PTR	66-81-199-83.socal.dialup.o1.com
66.81.199.84	PTR	66-81-199-84.socal.dialup.o1.com
66.81.199.85	PTR	66-81-199-85.socal.dialup.o1.com
66.81.199.86	PTR	66-81-199-86.socal.dialup.o1.com
66.81.199.87	PTR	66-81-199-87.socal.dialup.o1.com
66.81.199.88	PTR	66-81-199-88.socal.dialup.o1.com
66.81.199.89	PTR	66-81-199-89.socal.dialup.o1.com
66.81.199.90	PTR	66-81-199-90.socal.dialup.o1.com
66.81.199.91	PTR	66-81-199-91.socal.dialup.o1.com
66.81.199.92	PTR	66-81-199-92.socal.dialup.o1.com
66.81.199.93	PTR	66-81-199-93.socal.dialup.o1.com
66.81.199.94	PTR	66-81-199-94.socal.dialup.o1.com
66.81.199.95	PTR	66-81-199-95.socal.dialup.o1.com
66.81.199.96	PTR	66-81-199-96.socal.dialup.o1.com
66.81.199.97	PTR	66-81-199-97.socal.dialup.o1.com
66.81.199.98	PTR	66-81-199-98.socal.dialup.o1.com
66.81.199.99	PTR	66-81-199-99.socal.dialup.o1.com
66.81.199.100	PTR	66-81-199-100.socal.dialup.o1.com
66.81.199.101	PTR	66-81-199-101.socal.dialup.o1.com
66.81.199.102	PTR	66-81-199-102.socal.dialup.o1.com
66.81.199.103	PTR	66-81-199-103.socal.dialup.o1.com
66.81.199.104	PTR	66-81-199-104.socal.dialup.o1.com
66.81.199.105	PTR	66-81-199-105.socal.dialup.o1.com
66.81.199.106	PTR	66-81-199-106.socal.dialup.o1.com
66.81.199.107	PTR	66-81-199-107.socal.dialup.o1.com
66.81.199.108	PTR	66-81-199-108.socal.dialup.o1.com
66.81.199.109	PTR	66-81-199-109.socal.dialup.o1.com
66.81.199.110	PTR	66-81-199-110.socal.dialup.o1.com
66.81.199.111	PTR	66-81-199-111.socal.dialup.o1.com
66.81.199.112	PTR	66-81-199-112.socal.dialup.o1.com
66.81.199.113	PTR	66-81-199-113.socal.dialup.o1.com
66.81.199.114	PTR	66-81-199-114.socal.dialup.o1.com
66.81.199.115	PTR	66-81-199-115.socal.dialup.o1.com
66.81.199.116	PTR	66-81-199-116.socal.dialup.o1.com
66.81.199.117	PTR	66-81-199-117.socal.dialup.o1.com
66.81.199.118	PTR	66-81-199-118.socal.dialup.o1.com
66.81.199.119	PTR	66-81-199-119.socal.dialup.o1.com
66.81.199.120	PTR	66-81-199-120.socal.dialup.o1.com
66.81.199.121	PTR	66-81-199-121.socal.dialup.o1.com
66.81.199.122	PTR	66-81-199-122.socal.dialup.o1.com
66.81.199.123	PTR	66-81-199-123.socal.dialup.o1.com
66.81.199.124	PTR	66-81-199-124.socal.dialup.o1.com
66.81.199.125	PTR	66-81-199-125.socal.dialup.o1.com
66.81.199.126	PTR	66-81-199-126.socal.dialup.o1.com
66.81.199.127	PTR	66-81-199-127.socal.dialup.o1.com