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IPv4 root -> 51/8 -> 51.0.0.0/8

Summary for subnet 51.0.0.0/8

IP-range/subnet51.0.0.0-51.255.255.255
LocationUnited Kingdom (GB) gb flag
Registryripe
Number of domains hosted400,051
Number of nameservers hosted36,782
Number of mailservers hosted133,560
Number of SPAM hosts hosted1,286
Number of IDN domains hosted476
Number of domains in Alexa top million3,570
Number of IP routes673

Subnets based on RIR allocations

SubnetDescriptionRIRCountry#routes#domains#spamhosts
51.0.0.0/14Department for Work and PensionsripeGB0110
51.4.0.0/15Microsoft Deutschland MCIO GmbHripeDE38250
51.6.0.0/15British Telecommunications PLCripeGB110110
51.8.0.0/16Microsoft Deutschland MCIO GmbHripeDE100
51.9.0.0/16British Telecommunications PLCripeGB1405
51.10.0.0/14Microsoft LimitedripeGB230
51.14.0.0/16BT-CENTRAL-PLUSripeGB110
51.15.0.0/16ONLINE SASripeFR261,02744
51.16.0.0/15Department for Work and PensionsripeGB010
51.18.0.0/16Microsoft Deutschland MCIO GmbHripeGB100
51.19.0.0/16Sky UK LimitedripeGB030
51.20.0.0/12Department for Work and PensionsripeGB0120
51.36.0.0/16MTC KSAripeGB605282
51.37.0.0/16Vodafone Ireland LimitedripeIE61918
51.38.0.0/16OVH SASripeFR145,26336
51.39.0.0/16MTC KSAripeSA634181
51.40.0.0/16Department for Work and PensionsripeGB0930
51.51.0.0/16Microsoft LimitedripeGB110
51.52.0.0/16Gamma Telecom LimitedripeGB43115
51.53.0.0/16Microsoft LimitedripeGB130
51.54.0.0/15unknownripeGB0120
51.68.0.0/16OVH SASripeFR125,67150
51.69.0.0/15Department for Work and PensionsripeGB020
51.75.0.0/16OVH SASripeFR111,91075
51.76.0.0/16Department for Work and PensionsripeGB000
51.77.0.0/16OVH SASripeFR192010
51.78.0.0/16Department for Work and PensionsripeGB010
51.79.0.0/16OVH SASripeFR000
51.80.0.0/16Department for Work and PensionsripeGB010
51.81.0.0/16OVH SASripeFR000
51.82.0.0/16Department for Work and PensionsripeGB000
51.83.0.0/16OVH SASripeFR010
51.84.0.0/16Department for Work and PensionsripeGB010
51.89.0.0/16OVH SASripeFR000
51.90.0.0/16Department for Work and PensionsripeGB010
51.91.0.0/16OVH SASripeFR000
51.92.0.0/16Department for Work and PensionsripeGB0190
51.103.0.0/16Microsoft LimitedripeGB210
51.106.0.0/16Department for Work and PensionsripeGB000
51.107.0.0/16Microsoft LimitedripeGB100
51.108.0.0/13Department for Work and PensionsripeGB030
51.116.0.0/16Microsoft LimitedripeGB100
51.117.0.0/16Department for Work and PensionsripeGB000
51.120.0.0/16Microsoft LimitedripeGB100
51.121.0.0/16Department for Work and PensionsripeGB000
51.124.0.0/16Microsoft LimitedripeGB100
51.125.0.0/16Department for Work and PensionsripeGB030
51.132.0.0/16Microsoft LimitedripeGB120
51.133.0.0/16Department for Work and PensionsripeGB020
51.136.0.0/16Microsoft LimitedripeGB26330
51.139.0.0/16Department for Work and PensionsripeGB010
51.140.0.0/15Microsoft LimitedripeGB215,41310
51.146.0.0/16Sky UK LimitedripeGB000
51.147.0.0/16Department for Work and PensionsripeGB010
51.148.0.0/16Zen Internet LtdripeGB17760
51.149.0.0/16NOMAG1ripeGB630
51.154.0.0/16Salt Mobile SAripeCH11021
51.155.0.0/16Zen Internet LtdripeGB110
51.156.0.0/15unknownripeGB010
51.158.0.0/15ONLINE SASripeFR23,03822
51.160.0.0/16Department for Work and PensionsripeGB000
51.161.0.0/16OVH SASripeFR000
51.162.0.0/19Equinix 51.162.0.0/17ripeGB1600
51.163.160.0/19Digital Realty NetherlandsripeGB140
51.163.192.0/18Digital Realty NetherlandsripeGB100
51.164.0.0/15unknownripeGB030
51.170.0.0/16Zen Internet LtdripeGB000
51.171.0.0/16Eircom LimitedripeIE1142
51.172.0.0/15Department for Work and PensionsripeGB000
51.174.0.0/15Altibox ASripeNO11,2161
51.176.0.0/15unknownripeGB030
51.178.0.0/16OVH SASripeFR020
51.179.0.0/17LINKEM CUSTOMERSripeIT40019
51.179.128.0/18Metronet (UK) LimitedripeGB21101
51.179.192.0/18UKCLOUD LTDripeGB63680
51.180.0.0/15Department for Work and PensionsripeGB010
51.182.0.0/15Sky UK LimitedripeGB000
51.184.0.0/15Department for Work and PensionsripeGB010
51.186.0.0/15Sky UK LimitedripeGB000
51.188.0.0/15Department for Work and PensionsripeGB040
51.190.0.0/15Sky UK LimitedripeGB000
51.192.0.0/15Department for Work and PensionsripeGB000
51.194.0.0/16Sky UK LimitedripeGB010
51.195.0.0/16OVH SASripeFR010
51.196.0.0/15unknownripeGB010
51.198.0.0/15Sky UK LimitedripeGB010
51.200.0.0/15Department for Work and PensionsripeGB0120
51.210.0.0/16OVH SASripeFR000
51.211.0.0/16Saudi Telecom Company JSCripeSA172811
51.212.0.0/15Department for Work and PensionsripeGB010
51.218.0.0/16Saudi Telecom Company JSCripeSA8644
51.219.0.0/16Gamma Telecom LimitedripeGB1360
51.220.0.0/15unknownripeGB000
51.222.0.0/16OVH SASripeFR000
51.223.0.0/16Saudi Telecom Company JSCripeSA5060
51.224.0.0/16Department for Work and PensionsripeGB0110
51.235.0.0/16Saudi Telecom Company JSCripeSA812118
51.236.0.0/16Department for Work and PensionsripeGB030
51.241.0.0/16Sky UK LimitedripeGB000
51.242.0.0/13Department for Work and PensionsripeGB000

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

51.250.0.0/16 51.251.0.0/16 51.252.0.0/15 51.254.0.0/15

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