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IPv4 root -> 66/8 -> 66.0.0.0/8

Summary for subnet 66.0.0.0/8

IP-range/subnet66.0.0.0-66.255.255.255
LocationUnited States (US) us flag
Registryarin
Number of domains hosted2,947,061
Number of nameservers hosted48,458
Number of mailservers hosted2,253,472
Number of SPAM hosts hosted746
Number of IDN domains hosted439
Number of domains in Alexa top million9,962
Number of IP routes7,698

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
66.0.0.0/16NETBLCK-ITCD-3arinUS232291
66.1.0.0/16Sprint Communications, Inc.arinUS2490
66.2.0.0/15MCI Communications Services, Inc. d/b/a arinUS51071
66.4.0.0/15State of Tennessee Department of EducatiarinUS3160
66.6.0.0/20INTERSTATE TELECOMMUNICATIONS COOPERATIVarinUS3190
66.6.16.0/20Sobonito Investments ltd.arinUS48960
66.6.32.0/20TUMBLR, INC.arinUS2133,2040
66.6.48.0/20MOMENTOUS.CA CorporationarinCA01180
66.6.64.0/20Earthlink, Inc.arinUS160
66.6.80.0/20Shell Information Technology InternationarinUS040
66.6.96.0/19LightEdge SolutionsarinUS54040
66.6.128.0/20SKYWEB, INC.arinUS10500
66.6.144.0/20Cox Enterprises IncarinUS53700
66.6.160.0/20Fidelity Access Networks, LLCarinUS4700
66.6.176.0/20ResMed Corp.arinUS230
66.6.192.0/20Waymark Internet Services, Inc.arinUS1140
66.6.208.0/20TierzeroarinUS150
66.6.224.0/19NBA Properties, Inc.arinUS430
66.7.0.0/18Broadview Networks, Inc.arinUS2300
66.7.64.0/19Fastel Media IncarinCA130
66.7.96.0/20TSS CommunicationsarinUS2610
66.7.112.0/20Off Campus TelecommunicationsarinUS11200
66.7.128.0/18GTTarinUS191,8670
66.7.192.0/19HostDime.com, Inc.arinUS131,4455
66.7.224.0/19TPx CommunicationsarinUS2760
66.8.0.0/17MTN SAafrinicZA13251
66.8.128.0/17Time Warner Cable Internet LLCarinUS1290
66.9.0.0/16M2ngage Telecommunications II Corp.arinUS121991
66.10.0.0/16AT&T Corp.arinUS3130
66.11.0.0/19CONTINENTAL BROADBAND PENNSYLVANIA, INC.arinUS29880
66.11.32.0/20COGECODATAarinCA13160
66.11.48.0/20PHOTOBUCKET.COM, INC.arinUS510
66.11.64.0/19TeraGo Networks Inc.arinCA221220
66.11.96.0/20NetNITCOarinUS191
66.11.112.0/20Garrison Network Solutions LLCarinUS163,7250
66.11.128.0/20Stafford Associates Computer SpecialistsarinUS124910
66.11.144.0/20Canada Web HostingarinCA11,0690
66.11.160.0/19DISTRIBUTEL COMMUNICATIONS LTD.arinCA1210
66.11.192.0/19ShoreTel, Inc.arinUS5160
66.11.240.0/20Bledsoe Telephone Cooperative CorporatioarinUS1500
66.12.0.0/14MCI Communications Services, Inc. d/b/a arinUS2891810
66.16.0.0/16Windstream Communications LLCarinUS1540
66.17.0.0/18Arrival Communication, IncarinUS1890
66.17.64.0/20MegaPath CorporationarinUS900
66.17.80.0/20Sparkplug Southwest, LLC.arinUS6140
66.17.96.0/19SWIFTEL COMMUNICATIONSarinUS1370
66.17.128.0/17GTTarinUS186980
66.18.0.0/20DataBank Holdings, Ltd.arinUS48410
66.18.16.0/20DCT Technologies, Inc.arinUS14130
66.18.32.0/19EPB Fiber OpticsarinUS25710
66.18.64.0/19Sentech SOC LtdafrinicZA590
66.18.96.0/19Peak 10, Inc.arinUS34690
66.18.128.0/19MPOWER COMMUNICATIONS CORP.arinUS17230
66.18.160.0/20TULAROSA COMMUNICATIONS, INC.arinUS1580
66.18.176.0/20Adamswells InternetarinUS4150
66.18.192.0/18Nucleus Information Service, Inc.arinCA21,0500
66.19.0.0/16PaeTec Communications, Inc.arinUS1730
66.20.0.0/15AT&T Corp.arinUS46450
66.22.0.0/16Digicon CorporationarinUS5100
66.23.0.0/17Digicon CorporationarinUS33270
66.23.128.0/18Digicon CorporationarinUS31940
66.23.192.0/21ServerCratearinUS310
66.23.200.0/21US DedicatedarinUS81,1120
66.23.208.0/22Invero S. de R.L. de C.V.arinUS410
66.23.212.0/22SINAP-TIX, LLCarinUS320
66.23.216.0/22Insurance Auto Auctions, IncarinUS200
66.23.220.0/22MAW COMMUNICATIONSarinUS200
66.23.224.0/20Interserver, IncarinUS32,6763
66.23.240.0/20SolidSpace LLCarinUS45941
66.24.0.0/16Time Warner Cable Internet LLCarinUS1381
66.25.0.0/16Time Warner Cable Internet LLCarinUS41333
66.26.0.0/16Time Warner Cable Internet LLCarinUS3383
66.27.0.0/16Time Warner Cable Internet LLCarinUS62072
66.28.0.0/16Cogent CommunicationsarinUS265974
66.29.0.0/17Net Access CorporationarinUS23730
66.29.128.0/19Advantagecom Networks, Inc.arinUS17860
66.29.160.0/19Utah Broadband LLCarinUS11111
66.29.192.0/19CBEYOND COMMUNICATIONS, LLCarinUS11,2690
66.29.224.0/19Earthlink, Inc.arinUS1140
66.30.0.0/15Comcast Cable Communications, LLCarinUS12501
66.32.0.0/16Earthlink, Inc.arinUS261060
66.33.0.0/17Peer 1 Dedicated HostingarinCA18100
66.33.128.0/18N2P-1arinUS1010
66.33.192.0/19New Dream Network, LLCarinUS1581,4532
66.33.224.0/19Frontier Communications of America, Inc.arinUS140
66.34.0.0/16CoreSpace, Inc.arinUS116,7340
66.35.0.0/20Noel Communications, Inc.arinUS9385
66.35.16.0/20Fortinet Inc.arinUS010
66.35.32.0/19FORTRUSTarinUS61,0841
66.35.64.0/19Burges Property CompanyarinUS69370
66.35.96.0/19Northern Valley Communications LLCarinUS41,1940
66.35.128.0/18Earthlink, Inc.arinUS2610
66.35.192.0/18SavvisarinUS23750
66.36.0.0/20PaeTec Communications, Inc.arinUS120
66.36.16.0/20TierPoint, LLCarinUS110
66.36.32.0/19PAETECCOMMarinUS1100
66.36.64.0/19Nasdaq, Inc.arinUS200
66.36.96.0/20Peer 1 Dedicated HostingarinCA12,9430
66.36.112.0/20Colorado Central TelecomarinUS1481
66.36.128.0/19AEI Internet Inc.arinCA8110

Showing max 100 subnets. Premium members can view all subnets on this level. Summary of other available subnets:

66.36.160.0/19 66.36.192.0/19 66.36.224.0/19 66.37.0.0/19 66.37.32.0/20 66.37.48.0/20 66.37.64.0/19 66.37.96.0/20 66.37.112.0/20 66.37.128.0/19 66.37.160.0/19 66.37.192.0/19 66.37.224.0/19 66.38.0.0/17 66.38.128.0/17 66.39.0.0/17 66.39.128.0/19 66.39.160.0/19 66.39.192.0/19 66.39.224.0/19 66.40.0.0/16 66.41.0.0/16 66.42.0.0/19 66.42.32.0/19 66.42.64.0/18 66.42.128.0/17 66.43.0.0/20 66.43.16.0/20 66.43.32.0/20 66.43.48.0/20 66.43.64.0/20 66.43.80.0/21 66.43.88.0/22 66.43.92.0/24 66.43.93.0/24 66.43.94.0/24 66.43.95.0/24 66.43.96.0/23 66.43.98.0/24 66.43.99.0/24 66.43.100.0/24 66.43.101.0/24 66.43.102.0/23 66.43.104.0/24 66.43.105.0/24 66.43.106.0/24 66.43.107.0/24 66.43.108.0/24 66.43.109.0/24 66.43.110.0/24 66.43.111.0/24 66.43.112.0/21 66.43.120.0/21 66.43.128.0/18 66.43.192.0/18 66.44.0.0/17 66.44.128.0/18 66.44.192.0/19 66.44.224.0/20 66.44.240.0/20 66.45.0.0/17 66.45.128.0/19 66.45.160.0/19 66.45.192.0/19 66.45.224.0/19 66.46.0.0/16 66.47.0.0/16 66.48.0.0/16 66.49.0.0/17 66.49.128.0/18 66.49.192.0/20 66.49.208.0/20 66.49.224.0/20 66.49.240.0/21 66.49.248.0/22 66.49.252.0/23 66.49.254.0/24 66.49.255.0/24 66.50.0.0/16 66.51.0.0/19 66.51.32.0/20 66.51.48.0/20 66.51.64.0/19 66.51.96.0/19 66.51.128.0/20 66.51.144.0/20 66.51.160.0/20 66.51.176.0/20 66.51.192.0/19 66.51.224.0/20 66.51.240.0/20 66.52.0.0/15 66.54.0.0/18 66.54.64.0/19 66.54.96.0/20 66.54.112.0/20 66.54.128.0/17 66.55.0.0/18 66.55.64.0/20 66.55.80.0/20 66.55.96.0/20 66.55.112.0/20 66.55.128.0/19 66.55.160.0/19 66.55.192.0/19 66.55.224.0/19 66.56.0.0/18 66.56.64.0/19 66.56.96.0/19 66.56.128.0/17 66.57.0.0/16 66.58.0.0/17 66.58.128.0/17 66.59.0.0/19 66.59.32.0/20 66.59.48.0/20 66.59.64.0/19 66.59.96.0/19 66.59.128.0/18 66.59.224.0/19 66.60.0.0/18 66.60.64.0/19 66.60.96.0/19 66.60.128.0/18 66.60.192.0/19 66.60.224.0/23 66.60.226.0/24 66.60.227.0/24 66.60.228.0/22 66.60.232.0/23 66.60.234.0/24 66.60.235.0/24 66.60.236.0/22 66.60.240.0/24 66.60.241.0/24 66.60.242.0/23 66.60.244.0/24 66.60.245.0/24 66.60.246.0/23 66.60.248.0/21 66.61.0.0/16 66.62.0.0/16 66.63.0.0/18 66.63.64.0/18 66.63.128.0/19 66.63.160.0/19 66.63.192.0/19 66.63.224.0/19 66.64.0.0/18 66.64.64.0/19 66.64.96.0/19 66.64.128.0/17 66.65.0.0/16 66.66.0.0/15 66.68.0.0/15 66.70.0.0/17 66.70.128.0/17 66.71.0.0/17 66.71.128.0/18 66.71.192.0/19 66.71.224.0/20 66.71.240.0/20 66.72.0.0/15 66.74.0.0/15 66.76.0.0/16 66.77.0.0/16 66.78.0.0/18 66.78.64.0/19 66.78.96.0/19 66.78.128.0/18 66.78.192.0/18 66.79.0.0/18 66.79.64.0/19 66.79.96.0/19 66.79.128.0/19 66.79.160.0/19 66.79.192.0/19 66.79.224.0/19 66.80.0.0/16 66.81.0.0/23 66.81.2.0/23 66.81.4.0/23 66.81.6.0/24 66.81.7.0/24 66.81.8.0/24 66.81.9.0/24 66.81.10.0/23 66.81.12.0/23 66.81.14.0/24 66.81.15.0/24 66.81.16.0/21 66.81.24.0/22 66.81.28.0/23 66.81.30.0/23 66.81.32.0/22 66.81.36.0/23 66.81.38.0/23 66.81.40.0/21 66.81.48.0/23 66.81.50.0/23 66.81.52.0/22 66.81.56.0/21 66.81.64.0/20 66.81.80.0/24 66.81.81.0/24 66.81.82.0/23 66.81.84.0/22 66.81.88.0/22 66.81.92.0/23 66.81.94.0/24 66.81.95.0/24 66.81.96.0/22 66.81.100.0/23 66.81.102.0/24 66.81.103.0/24 66.81.104.0/23 66.81.106.0/23 66.81.108.0/22 66.81.112.0/21 66.81.120.0/22 66.81.124.0/22 66.81.128.0/22 66.81.132.0/24 66.81.133.0/24 66.81.134.0/23 66.81.136.0/21 66.81.144.0/21 66.81.152.0/22 66.81.156.0/23 66.81.158.0/24 66.81.159.0/24 66.81.160.0/19 66.81.192.0/20 66.81.208.0/22 66.81.212.0/22 66.81.216.0/21 66.81.224.0/23 66.81.226.0/24 66.81.227.0/24 66.81.228.0/22 66.81.232.0/21 66.81.240.0/20 66.82.0.0/16 66.83.0.0/16 66.84.0.0/18 66.84.64.0/20 66.84.80.0/20 66.84.96.0/19 66.84.128.0/17 66.85.0.0/24 66.85.1.0/24 66.85.2.0/24 66.85.3.0/24 66.85.4.0/23 66.85.6.0/24 66.85.7.0/24 66.85.8.0/24 66.85.9.0/24 66.85.10.0/24 66.85.11.0/24 66.85.12.0/24 66.85.13.0/24 66.85.14.0/23 66.85.16.0/22 66.85.20.0/24 66.85.21.0/24 66.85.22.0/23 66.85.24.0/24 66.85.25.0/24 66.85.26.0/23 66.85.28.0/22 66.85.32.0/23 66.85.34.0/24 66.85.35.0/24 66.85.36.0/22 66.85.40.0/24 66.85.41.0/24 66.85.42.0/24 66.85.43.0/24 66.85.44.0/22 66.85.48.0/21 66.85.56.0/23 66.85.58.0/24 66.85.59.0/24 66.85.60.0/24 66.85.61.0/24 66.85.62.0/24 66.85.63.0/24 66.85.64.0/23 66.85.66.0/24 66.85.67.0/24 66.85.68.0/24 66.85.69.0/24 66.85.70.0/23 66.85.72.0/21 66.85.80.0/24 66.85.81.0/24 66.85.82.0/23 66.85.84.0/22 66.85.88.0/23 66.85.90.0/24 66.85.91.0/24 66.85.92.0/22 66.85.96.0/19 66.85.128.0/18 66.85.192.0/19 66.85.224.0/20 66.85.240.0/21 66.85.248.0/22 66.85.252.0/23 66.85.254.0/24 66.85.255.0/24 66.86.0.0/16 66.87.0.0/16 66.88.0.0/15 66.90.0.0/18 66.90.64.0/18 66.90.128.0/17 66.91.0.0/16 66.92.0.0/15 66.94.0.0/19 66.94.32.0/20 66.94.48.0/20 66.94.64.0/19 66.94.96.0/19 66.94.128.0/18 66.94.192.0/19 66.94.224.0/19 66.95.0.0/16 66.96.0.0/20 66.96.16.0/20 66.96.32.0/19 66.96.64.0/20 66.96.80.0/20 66.96.96.0/20 66.96.112.0/20 66.96.128.0/18 66.96.192.0/19 66.96.224.0/19 66.97.0.0/20 66.97.16.0/20 66.97.32.0/20 66.97.48.0/20 66.97.64.0/19 66.97.96.0/20 66.97.128.0/20 66.97.144.0/20 66.97.160.0/23 66.97.162.0/23 66.97.164.0/24 66.97.165.0/24 66.97.166.0/24 66.97.167.0/24 66.97.168.0/24 66.97.169.0/24 66.97.170.0/24 66.97.171.0/24 66.97.172.0/23 66.97.174.0/23 66.97.176.0/24 66.97.177.0/24 66.97.178.0/24 66.97.179.0/24 66.97.180.0/22 66.97.184.0/22 66.97.188.0/24 66.97.189.0/24 66.97.190.0/23 66.97.192.0/19 66.97.224.0/19 66.98.0.0/18 66.98.64.0/19 66.98.96.0/20 66.98.112.0/20 66.98.128.0/17 66.99.0.0/16 66.100.0.0/15 66.102.0.0/20 66.102.16.0/20 66.102.32.0/20 66.102.48.0/20 66.102.64.0/19 66.102.96.0/19 66.102.128.0/20 66.102.144.0/20 66.102.160.0/19 66.102.192.0/20 66.102.208.0/20 66.102.224.0/20 66.102.240.0/20 66.103.0.0/20 66.103.16.0/20 66.103.32.0/19 66.103.64.0/19 66.103.96.0/20 66.103.112.0/20 66.103.128.0/19 66.103.160.0/19 66.103.192.0/19 66.103.224.0/19 66.104.0.0/14 66.108.0.0/16 66.109.0.0/20 66.109.16.0/20 66.109.32.0/19 66.109.64.0/20 66.109.80.0/20 66.109.96.0/20 66.109.112.0/21 66.109.120.0/21 66.109.128.0/19 66.109.160.0/19 66.109.192.0/20 66.109.208.0/20 66.109.224.0/19 66.110.0.0/17 66.110.128.0/19 66.110.160.0/20 66.110.176.0/20 66.110.192.0/19 66.110.224.0/19 66.111.0.0/20 66.111.16.0/20 66.111.32.0/19 66.111.64.0/19 66.111.96.0/20 66.111.112.0/20 66.111.128.0/18 66.111.192.0/18 66.112.0.0/17 66.112.128.0/20 66.112.144.0/20 66.112.160.0/20 66.112.176.0/20 66.112.192.0/20 66.112.208.0/20 66.112.224.0/19 66.113.0.0/19 66.113.32.0/19 66.113.64.0/19 66.113.96.0/20 66.113.112.0/20 66.113.128.0/17 66.114.0.0/19 66.114.32.0/20 66.114.48.0/20 66.114.64.0/19 66.114.96.0/19 66.114.128.0/19 66.114.160.0/20 66.114.176.0/20 66.114.192.0/18 66.115.0.0/18 66.115.64.0/20 66.115.80.0/20 66.115.96.0/19 66.115.128.0/18 66.115.192.0/18 66.116.0.0/18 66.116.64.0/20 66.116.80.0/20 66.116.96.0/19 66.116.128.0/17 66.117.0.0/20 66.117.16.0/20 66.117.32.0/19 66.117.64.0/19 66.117.96.0/20 66.117.112.0/20 66.117.128.0/19 66.117.160.0/19 66.117.192.0/18 66.118.64.0/19 66.118.96.0/20 66.118.112.0/20 66.118.128.0/18 66.118.192.0/19 66.119.0.0/19 66.119.32.0/20 66.119.48.0/20 66.119.64.0/19 66.119.96.0/20 66.119.112.0/24 66.119.113.0/24 66.119.114.0/23 66.119.116.0/23 66.119.118.0/24 66.119.119.0/24 66.119.120.0/22 66.119.124.0/22 66.119.128.0/20 66.119.144.0/20 66.119.160.0/19 66.119.192.0/19 66.119.224.0/20 66.119.240.0/20 66.120.0.0/13 66.128.0.0/20 66.128.16.0/20 66.128.32.0/20 66.128.48.0/20 66.128.64.0/20 66.128.80.0/20 66.128.96.0/19 66.128.128.0/20 66.128.144.0/20 66.128.160.0/19 66.128.192.0/20 66.128.208.0/20 66.128.224.0/20 66.128.240.0/20 66.129.0.0/19 66.129.32.0/20 66.129.48.0/20 66.129.64.0/18 66.129.128.0/19 66.129.160.0/20 66.129.176.0/20 66.129.192.0/19 66.129.224.0/19 66.130.0.0/15 66.132.0.0/17 66.132.128.0/17 66.133.0.0/22 66.133.4.0/23 66.133.6.0/24 66.133.7.0/24 66.133.8.0/24 66.133.9.0/24 66.133.10.0/23 66.133.12.0/24 66.133.13.0/24 66.133.14.0/23 66.133.16.0/20 66.133.32.0/20 66.133.48.0/21 66.133.56.0/24 66.133.57.0/24 66.133.58.0/23 66.133.60.0/22 66.133.64.0/21 66.133.72.0/21 66.133.80.0/20 66.133.96.0/19 66.133.128.0/18 66.133.192.0/18 66.134.0.0/16 66.135.0.0/19 66.135.32.0/19 66.135.64.0/19 66.135.96.0/19 66.135.128.0/18 66.135.192.0/19 66.135.224.0/19 66.136.0.0/13 66.144.0.0/15 66.146.0.0/17 66.146.128.0/19 66.146.160.0/19 66.146.192.0/19 66.146.224.0/20 66.146.240.0/20 66.147.0.0/17 66.147.128.0/18 66.147.192.0/19 66.147.224.0/20 66.147.240.0/20 66.148.0.0/18 66.148.64.0/18 66.148.128.0/17 66.149.0.0/16 66.150.0.0/15 66.152.0.0/18 66.152.64.0/19 66.152.96.0/20 66.152.112.0/20 66.152.128.0/19 66.152.160.0/19 66.152.192.0/18 66.153.0.0/17 66.153.128.0/17 66.154.0.0/18 66.154.64.0/19 66.154.96.0/19 66.154.128.0/17 66.155.0.0/17 66.155.128.0/17 66.156.0.0/15 66.158.0.0/17 66.158.128.0/19 66.158.160.0/20 66.158.176.0/20 66.158.192.0/18 66.159.0.0/19 66.159.32.0/20 66.159.48.0/20 66.159.64.0/19 66.159.96.0/23 66.159.98.0/23 66.159.100.0/23 66.159.104.0/23 66.159.106.0/23 66.159.108.0/22 66.159.112.0/20 66.159.128.0/18 66.159.192.0/18 66.160.0.0/17 66.160.128.0/18 66.160.192.0/20 66.160.208.0/20 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