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Data as of Nov 6, 2026

51.155.0.0/16

813 residential-proxy exits · 30 days

Zen Internet Ltd

Announcement
this exact prefix
RPKI valid
Announced by
AS13037
Type
Residential
81% of it

Residential-proxy exits

Proxy exits
813
1.2% of its addresses · 30 days
Always-on exits
100
12% of its exits
Spread
214 of 256
/24s with at least one exit
Providers
108
selling exits here
Oct 7, 2026 – Nov 5, 2026

Exits seen per day

331K observations
  • Residential
  • Business

/24s with the most always-on exits

/24Always-on exitsProxy exits
51.155.99.0/2438
51.155.241.0/2437
51.155.212.0/2434
51.155.142.0/24210
51.155.149.0/2429
51.155.165.0/2426
51.155.209.0/2426
51.155.14.0/2425
51.155.155.0/2425
51.155.151.0/2425
51.155.200.0/2425
51.155.160.0/2424
51.155.230.0/2424
51.155.159.0/2424
51.155.112.0/2424
51.155.194.0/24111
51.155.222.0/24110
51.155.135.0/2419
51.155.102.0/2419
51.155.127.0/2419
51.155.187.0/2418
51.155.180.0/2418
51.155.173.0/2417
51.155.227.0/2417

Proxy providers listing exits

  • 2Captcha
  • 2Extract
  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • Bright Data
  • BuyingProxy
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • CoreProxy
  • DataImpulse
  • Datarama
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • GeekProxy
  • Geonix
  • Geonode
  • GhostConnect
  • GloryCloud
  • GoProxies
  • GonzoProxy
  • HideProxy
  • HydraProxy
  • IPCola
  • IPFly
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • KocerRoxy
  • Kookey
  • LemonBright
  • LemonLabs
  • LemonPrime
  • LightningProxies
  • LudaxProxy
  • MagneticProxy
  • MangoProxy
  • MarsProxies
  • Maskify
  • MoMoProxy
  • MrScraper
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PSBProxy
  • PacketStream
  • PrivateByte
  • PrivateProxy
  • ProxiesVision
  • Proxio
  • Proxiware
  • Proxmint
  • Proxy-Cheap
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyRack
  • ProxyWing
  • Proxying
  • Proxyma
  • PuraRoute
  • Q2IP
  • RainProxy
  • RapidProxy
  • ResiProxies
  • RoamProxy
  • RolaProxy
  • Shifter
  • Smartproxy
  • SpyderProxy
  • StrikeProxy
  • SwiftProxy
  • TalorData
  • Thordata
  • ThunderProxy
  • TrueProxies
  • TrustProxy
  • VProxy
  • VantageProxies
  • VibeProxies
  • VitalData
  • VitalExclusive
  • VitalProxy
  • YumiProxy

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
51.155.0.0/1665,536UK-ZENZen Internet Ltd (ORG-ZIL1-RIPE) · GBLEGACYSep 23, 2015abuse@zen.co.uk
└ 51.155.0.0/204,096ZEN20190122-DM-ZEN-ADSL16unknownLEGACYJan 22, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.72/298ZEN20211027-NOC-NVIRON-LIMITEDNviron LimitedLEGACYOct 27, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.80/298ZEN20220524-NOC-EIGHT-NETWORKS-LTDEight Networks LtdLEGACYMay 24, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.104/298ZEN20240109-NOC-FIBRE-1Fibre 1LEGACYJan 9, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.144/298ZEN20230706-NOC-FOOTASYLUM-LTDFootasylum LtdLEGACYJul 6, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.152/298ZEN20210308-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYMar 8, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.160/298ZEN20251117-NOC-ACCELERATOR-LIMITEDAccelerator LimitedLEGACYJul 1, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.168/298ZEN20210909-NOC-PRESTIGE-GRANITE-AND-MARBLEPrestige Granite and MarbleLEGACYAug 24, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.184/298ZEN20260318-EDINBURGH-CHAMBER-OF-COMMERCEEdinburgh Chamber of CommerceLEGACYMar 18, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.192/298ZEN20210824-NOC-FIRSTCOM-EUROPE-LTDFirstcom Europe LtdLEGACYAug 24, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.208/298ZEN20250724-NOC-NEXGEN-IT-SOLUTIONSNexGen IT SolutionsLEGACYJul 24, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.216/298ZEN20231223-NOC-COMPUTERCENTRIC-LIMITEDComputercentric LimitedLEGACYDec 23, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.16.248/298ZEN20250119-NOC-UK-ICT-LTDUK ICT LtdLEGACYJan 19, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.0/298ZEN20250702-NOC-AFFINITIVE-IT-LTDAffinitive IT LtdLEGACYJul 2, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.8/298ZEN20220425-NOC-BUTTERWICK-LIMITEDButterwick LimitedLEGACYApr 25, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.16/298ZEN20191112-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYNov 12, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.32/298ZEN20190905-NOC-VELDEN-ENGINEERING-UK-LTDVelden Engineering UK LtdLEGACYSep 5, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.48/298ZEN20231013-NOC-JC-IT-SOLUTIONS-LTDJC-IT Solutions LtdLEGACYOct 13, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.56/298ZEN20260703-COMPUTERCENTRIC-LIMITEDComputercentric LimitedLEGACYJul 3, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.64/298ZEN20221209-NOC-BLACK-BEAR-IT-SOLUTIONS-LTDBlack Bear IT Solutions LtdLEGACYDec 9, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.72/298ZEN20260206-NOC-DARWIN-NORTH-WEST-LIMITEDDarwin North West LimitedLEGACYFeb 6, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.80/298ZEN20260225-MAC-SYSTEMSMac SystemsLEGACYFeb 25, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.88/298ZEN20240824-NOC-AMARI-METALS-LIMITEDAmari Metals LimitedLEGACYAug 24, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.104/298ZEN20191212-NOC-VIA-STUDIOS-LTDVIA Studios LtdLEGACYDec 12, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.112/298ZEN20260713-FLOTEK-GROUP-LIMITEDFlotek Group LimitedLEGACYJul 13, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.128/298ZEN20260506-SHAW-HEALTHCARE-GROUP-LTDShaw Healthcare Group LtdLEGACYMay 6, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.136/298ZEN20250607-NOC-ACCELERATOR-LIMITEDAccelerator LimitedLEGACYApr 27, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.144/2816ZEN20250426-NOC-YARDI-SYSTEMS-LTDYardi Systems LtdLEGACYApr 26, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.160/298ZEN20250427-NOC-ULTIMATE-FINANCE-GROUP-LTDUltimate Finance Group LtdLEGACYApr 27, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.168/298ZEN20250430-NOC-ARCSTREAM-SYSTEMS-LIMITEDArcstream Systems LimitedLEGACYApr 30, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.176/298ZEN20260713-PISYSNET-LIMITEDPiSys.net LimitedLEGACYJul 13, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.184/298ZEN20240929-NOC-AMEY-GROUP-INFORMATION-SERVICES-LTDAmey Group Information Services LtdLEGACYSep 29, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.192/298ZEN20190905-NOC-TRADE-MOULDINGS-DISTRIBUTION-LIMITEDTrade Mouldings Distribution LimitedLEGACYSep 5, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.208/298ZEN20260707-L1-GROUP-HOLDINGS-LTDL1 Group Holdings LtdLEGACYJul 7, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.216/298ZEN20260707-TRANSPEED-EUROPE-LTDTranspeed Europe Ltd.LEGACYJul 7, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.224/298ZEN20260217-NOC-VIZST-TECHNOLOGY-LIMITEDVizst Technology LimitedLEGACYFeb 17, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.232/298ZEN20260507-SHAW-HEALTHCARE-GROUP-LTDShaw Healthcare Group LtdLEGACYMay 7, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.240/298ZEN20260706-ASPEN-SOLUTIONSAspen SolutionsLEGACYJul 6, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.17.248/298ZEN20240329-NOC-ACCELERATOR-LIMITEDAccelerator LimitedLEGACYMar 29, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.0/298ZEN20210916-NOC-ACTIVE-BUSINESS-COMMUNICATIONS-LTDActive Business Communications LtdLEGACYSep 16, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.8/298ZEN20200604-NOC-QUAD-COMPUTER-SERVICES-LIMITEDQuad Computer Services LimitedLEGACYJun 4, 2020abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.16/298ZEN20230428-NOC-WATERGROVE-TRUSTWatergrove TrustLEGACYApr 22, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.24/298ZEN20250410-NOC-KINGS-LEADERSHIP-ACADEMYKings Leadership AcademyLEGACYJun 2, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.32/298ZEN20260209-NOC-PINNACLE-COMPUTING-LTDPinnacle Computing LtdLEGACYFeb 9, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.40/298ZEN20260423-WEALD-COMPUTER-MAINTENANCE-LTDWeald Computer Maintenance LtdLEGACYApr 23, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.48/298ZEN20260522-ZENZERO-SOLUTIONS-LTDZenzero Solutions LtdLEGACYMay 22, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.56/298ZEN20240510-NOC-QI-LTDQI LtdLEGACYMay 10, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.72/298ZEN20260512-BRABANT-LTDBrabant LtdLEGACYMay 12, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.88/298ZEN20260326-WEALD-COMPUTER-MAINTENANCE-LTDWeald Computer Maintenance LtdLEGACYMar 26, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.104/298ZEN20220623-NOC-ULTIMATE-FINANCE-GROUP-LTDUltimate Finance Group LtdLEGACYJun 23, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.112/298ZEN20250911-NOC-ARTIFICIAL-INTELLIGENCE-MANAGEMENT-SERVICES-LIMITEDArtificial Intelligence Management Services LimitedLEGACYSep 11, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.168/298ZEN20250430-NOC-STRIDENT-LTDStrident LtdLEGACYApr 30, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.176/298ZEN20240824-NOC-VITAL-ENERGI-UTILITIES-LTDVital Energi Utilities LtdLEGACYAug 24, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.184/298ZEN20231106-NOC-MERE-GOLF---COUNTRY-CLUBMere Golf - Country ClubLEGACYNov 6, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.192/298ZEN20240506-NOC-MAHLE-AFTERMARKET-LTDMAHLE Aftermarket LtdLEGACYMay 6, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.208/298ZEN20231022-NOC-GREGORY-DISTRIBUTION-LTDGregory Distribution LtdLEGACYOct 22, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.216/298ZEN20251212-NOC-WEALD-COMPUTER-MAINTENANCE-LTDWeald Computer Maintenance LtdLEGACYDec 12, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.240/298ZEN20210408-NOC-RAIL-GOURMET-UK-LIMITEDRail Gourmet U.K. LimitedLEGACYApr 8, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.18.248/298ZEN20210116-NOC-BEEVERS-STRUTHERSBeevers StruthersLEGACYJan 16, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.0/298ZEN20240404-NOC-RELIANT-UK-LTDReliant UK LTDLEGACYApr 4, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.16/298ZEN20210117-NOC-NEXGEN-IT-SOLUTIONSNexGen IT SolutionsLEGACYJan 17, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.24/298ZEN20220830-NOC-WARD-AND-BURKE-CONSTRUCTION-LIMITEDWard and Burke Construction LimitedLEGACYAug 30, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.40/298ZEN20240808-NOC-CLOUDCOCO-LTDCloudCoCo LtdLEGACYAug 8, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.48/298ZEN20200629-NOC-ALSOP-RIVENDALE-LIMITEDAlsop Rivendale LimitedLEGACYJun 29, 2020abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.56/298ZEN20240427-NOC-MAHLE-ENGINE-SYSTEMS-UK-LTDMAHLE Engine Systems UK LtdLEGACYJun 16, 2020abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.80/298ZEN20230202-NOC-FIRST-CONTACTFirst ContactLEGACYFeb 2, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.88/298ZEN20260123-NOC-VIZST-TECHNOLOGY-LIMITEDVizst Technology LimitedLEGACYJan 23, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.96/298ZEN20250821-NOC-BISTECH-MANAGED-SERVICES-LIMITEDBistech Managed Services LimitedLEGACYAug 21, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.104/298ZEN20240329-NOC-ROSEMARY-CO-ARTISTS-BRUSHES-LTDRosemary Co Artists Brushes LtdLEGACYMar 29, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.112/298ZEN20221216-NOC-IMPIRIUS-LIMITEDImpirius LimitedLEGACYDec 16, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.120/298ZEN20240728-NOC-PRET-A-MANGER-LTDPret A Manger LTDLEGACYJul 28, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.128/298ZEN20240825-NOC-BLACKSMITH-FREIGHT-LIMITEDBlacksmith Freight LimitedLEGACYAug 25, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.136/298ZEN20261005-127-SOLUTIONS-LIMITED127 Solutions LimitedLEGACYOct 5, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.144/298ZEN20260326-CRONSHAW-ELECTRICAL-LTDCronshaw Electrical LtdLEGACYMar 26, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.160/298ZEN20210120-NOC-GLOCAST-LTDGloCast LtdLEGACYJan 20, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.168/298ZEN20240728-NOC-PRET-A-MANGER-LTDPret A Manger LTDLEGACYJul 28, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.184/298ZEN20221216-NOC-THE-GREENHOUSE-PEOPLEThe Greenhouse PeopleLEGACYDec 16, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.208/298ZEN20250430-NOC-STRIDENT-LTDStrident LtdLEGACYApr 30, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.224/298ZEN20230805-NOC-CAPULA-LIMITEDCapula LimitedLEGACYAug 5, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.232/298ZEN20230823-NOC-ALFRED-H-KNIGHT-HOLDINGS-LTDAlfred H Knight Holdings LtdLEGACYAug 8, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.19.248/298ZEN20220718-NOC-OISE-LIMITEDOISE LimitedLEGACYJul 18, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.0/298ZEN20230730-NOC-ALFRED-H-KNIGHT-HOLDINGS-LTDAlfred H Knight Holdings LtdLEGACYJul 30, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.8/298ZEN20190715-NOC-MITCHELL-INTERFLEX-LTDMitchell Interflex LtdLEGACYJul 15, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.16/298ZEN20231224-NOC-NCS-IT-LIMITEDNCS IT LimitedLEGACYDec 24, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.40/298ZEN20191112-NOC-RESR.E.S.LEGACYNov 12, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.48/298ZEN20260924-STONEACREStoneacreLEGACYSep 24, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.56/298ZEN20210120-NOC-COMPUTERCENTRIC-LIMITEDComputercentric LimitedLEGACYJan 20, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.64/298ZEN20250430-NOC-ELECTRONIC-BUSINESS-SYSTEMSElectronic Business SystemsLEGACYApr 30, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.80/298ZEN20250714-NOC-GRACE-SOLUTIONS-LTDGrace Solutions LtdLEGACYJul 14, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.96/298ZEN20190709-NOC-COMPUTERCENTRIC-LIMITEDComputercentric LimitedLEGACYJul 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.104/298ZEN20230424-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYApr 24, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.112/298ZEN20260202-NOC-HIGHSTREAM-SOLUTIONS-LTDHighstream Solutions LtdLEGACYFeb 2, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.120/298ZEN20260202-NOC-NVIRON-LIMITEDNviron LimitedLEGACYFeb 2, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.128/298ZEN20240809-NOC-EDINBURGH-INSTRUMENTS-LTDEdinburgh Instruments LtdLEGACYJul 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.136/298ZEN20190709-NOC-COMPLETE-BUSINESS-SOLUTIONSComplete Business SolutionsLEGACYJul 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.144/298ZEN20200207-NOC-BITSOL-TELECOM-LTDBitsol Telecom LtdLEGACYJul 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.152/298ZEN20190709-NOC-TECHNOLOGY-SERVICES-GROUP-LIMITEDTechnology Services Group LimitedLEGACYJul 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.160/298ZEN20250127-NOC-VALOURANValouranLEGACYJan 27, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.168/298ZEN20190711-NOC-AMEY-GROUP-INFORMATION-SERVICES-LTDAmey Group Information Services LtdLEGACYJul 11, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.176/298ZEN20250702-NOC-NEXGEN-IT-SOLUTIONSNexGen IT SolutionsLEGACYJul 2, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.184/298ZEN20190712-NOC-STANTEC-UK-LTDStantec UK LtdLEGACYJul 12, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.192/298ZEN20260413-BKPLUSBKPLUSLEGACYApr 13, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.208/298ZEN20230421-NOC-MTECH-IT-LIMITEDMtech IT LimitedLEGACYApr 21, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.216/298ZEN20230619-NOC-PISYSNET-LIMITEDPiSys.net LimitedLEGACYJun 19, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.224/2816ZEN20221015-NOC-FOREGALE-LTDForegale LtdLEGACYJul 11, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.240/298ZEN20190717-NOC-MICROCONNECT-SYSTEMS-LLPMicroconnect Systems LLPLEGACYJul 17, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.20.248/298ZEN20250504-NOC-PM-DATA-SERVICES-LIMITEDPM Data Services LimitedLEGACYApr 30, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.0/298ZEN20191001-NOC-PHONEWORCS-LTDPhoneworcs LtdLEGACYOct 1, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.8/298ZEN20191001-NOC-TDG-BRAND-COMMUNICATIONS-LTDTDG Brand Communications LtdLEGACYOct 1, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.24/298ZEN20200130-NOC-BITSOL-TELECOM-LTDBitsol Telecom LtdLEGACYOct 3, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.32/298ZEN20191003-NOC-CUSTARD-TECHNICAL-SERVICES-LTDCustard Technical Services LtdLEGACYOct 3, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.40/298ZEN20191007-NOC-ITC-SERVICE-LTDITC Service LtdLEGACYOct 7, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.48/298ZEN20191008-NOC-TELLEMACHUS-LTDTellemachus LtdLEGACYOct 8, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.56/298ZEN20221230-NOC-COMPUTER-CARE-CONSULTANTS-LTDComputer Care Consultants LtdLEGACYDec 30, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.64/298ZEN20250805-NOC-THE-KINGSWAY-SCHOOLThe Kingsway SchoolLEGACYAug 5, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.72/298ZEN20230215-NOC-ELECTRONIC-BUSINESS-SYSTEMSElectronic Business SystemsLEGACYJul 19, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.88/298ZEN20231213-NOC-ASHTON-OFFICE-SUPPLIESAshton Office SuppliesLEGACYDec 13, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.96/298ZEN20190808-NOC-THE-OAK-TRUSTThe Oak TrustLEGACYAug 8, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.104/298ZEN20190808-NOC-PROGNOSYS-LTDPrognosys LtdLEGACYAug 8, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.112/298ZEN20260812-GRACE-SOLUTIONS-LTDGrace Solutions LtdLEGACYAug 12, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.128/298ZEN20230105-NOC-HYDRO-INTERNATIONAL-LTDHydro International LtdLEGACYJan 5, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.160/298ZEN20190813-NOC-DATA-PACIFIC-LTDData Pacific LtdLEGACYAug 13, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.168/298ZEN20190809-NOC-S-KERSHAW-AND-SONSS Kershaw and SonsLEGACYAug 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.176/298ZEN20190809-NOC-IMPACT-COMPUTING-AND-CONSULTING-LTDImpact Computing and Consulting LtdLEGACYAug 9, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.184/298ZEN20190807-NOC-QUAD-COMPUTER-SERVICES-LIMITEDQuad Computer Services LimitedLEGACYAug 7, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.192/298ZEN20260907-STARK-BUILDING-MATERIALS-UK-LIMITEDSTARK Building Materials UK LimitedLEGACYSep 7, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.200/298ZEN20190810-NOC-REDLINE-TELE-COM-LTDRedline Tele com LtdLEGACYAug 10, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.216/298ZEN20190813-NOC-PROGNOSYS-LTDPrognosys LtdLEGACYAug 13, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.224/298ZEN20230407-NOC-SIG-TRADING-LIMITEDSIG Trading LimitedLEGACYApr 7, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.240/298ZEN20190821-NOC-ACTIVE-BUSINESS-COMMUNICATIONS-LTDActive Business Communications LtdLEGACYAug 21, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.21.248/298ZEN20230331-NOC-LASH-HOUSE-LTDLash House LtdLEGACYAug 21, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.0/298ZEN20250703-NOC-BC-TECHNOLOGIES-LLPBC-Technologies LLPLEGACYJul 3, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.8/298ZEN20250703-NOC-ATOM-IT-SOLUTIONS-LIMITEDAtom IT Solutions LimitedLEGACYJul 3, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.16/298ZEN20250703-NOC-CATALYST-SYSTEMSCATalyst SystemsLEGACYJul 3, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.24/298ZEN20250707-NOC-AMEY-GROUP-INFORMATION-SERVICES-LTDAmey Group Information Services LtdLEGACYJul 7, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.40/298ZEN20190822-NOC-ANYWHERE-CLOUD-LIMITEDAnywhere Cloud LimitedLEGACYAug 22, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.48/298ZEN20260330-TIGERNET-SOLUTIONS-LTDTigernet Solutions LtdLEGACYMar 30, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.56/298ZEN20190822-NOC-ACCELERATOR-LIMITEDAccelerator LimitedLEGACYAug 22, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.64/298ZEN20210122-NOC-MEP-LTDMEP LtdLEGACYJan 22, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.72/298ZEN20250804-NOC-NETWORK-INTERNET-LIMITEDNetwork Internet LimitedLEGACYAug 29, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.80/298ZEN20191029-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYOct 29, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.88/298ZEN20230209-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYOct 29, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.96/298ZEN20260527-BRITBET-RACING-LLPBritbet Racing LLPLEGACYMay 27, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.104/298ZEN20190905-NOC-IMPIRIUS-LIMITEDImpirius LimitedLEGACYSep 5, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.112/2816ZEN20190830-NOC-DAVID-RITCHIE-LTDdavid Ritchie LtdLEGACYAug 30, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.160/298ZEN20190907-NOC-LEONARD-CURTIS-RECOVERY-LTDLeonard Curtis Recovery LtdLEGACYSep 7, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.168/298ZEN20191026-NOC-ROCHDALE-DEVELOPMENT-AGENCYRochdale Development AgencyLEGACYOct 26, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.176/298ZEN20260202-NOC-ONE-EDUCATION-LTDOne Education LtdLEGACYFeb 2, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.184/298ZEN20230407-NOC-NETBUILDERNetbuilderLEGACYApr 7, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.192/298ZEN20190914-NOC-IMPIRIUS-LIMITEDImpirius LimitedLEGACYSep 14, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.200/298ZEN20231014-NOC-DC-SERVICES-NE-LTDDC Services NE LtdLEGACYOct 14, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.208/2816ZEN20240228-NOC-SHIRE-FOODS-LTDShire Foods LtdLEGACYFeb 28, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.224/298ZEN20240728-NOC-PRET-A-MANGER-LTDPret A Manger LTDLEGACYJul 28, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.22.232/298ZEN20260416-ASPEN-SOLUTIONSAspen SolutionsLEGACYApr 16, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.0/298ZEN20260121-NOC-ECLIPSE-TELECOM-NETWORKS-LTDEclipse Telecom Networks LtdLEGACYJan 21, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.8/298ZEN20260409-IBI-INTERNATIONAL-LOGISTICS-LIMITEDIBI International Logistics LimitedLEGACYApr 9, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.24/298ZEN20190930-NOC-PETER-BRETT-ASSOCIATES-LLPPeter Brett Associates LLPLEGACYSep 30, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.32/298ZEN20230212-NOC-NETPROVISO-LTDNetproviso LtdLEGACYFeb 12, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.40/298ZEN20250728-NOC-RPS-COMMUNICATIONSRPS CommunicationsLEGACYJul 28, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.48/298ZEN20240329-NOC-LANSALOT-LTDLansalot LtdLEGACYMar 29, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.64/298ZEN20191010-NOC-KEY-COMPUTER-SOLUTIONS-LTDKey Computer Solutions LtdLEGACYOct 10, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.72/298ZEN20260601-AURA-IT-SOLUTIONSAura IT SolutionsLEGACYJun 1, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.80/2816ZEN20260910-VELDEN-ENGINEERING-UK-LTDVelden Engineering (UK) LtdLEGACYSep 10, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.104/298ZEN20240921-NOC-RISCO-GROUP-UK-LTDRisco Group UK LtdLEGACYSep 21, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.112/298ZEN20250621-NOC-RUTLAND-SAILING-CLUBRutland Sailing ClubLEGACYOct 18, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.120/298ZEN20191021-NOC-BARRETT-STEEL-LTDBarrett Steel LtdLEGACYOct 21, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.128/298ZEN20240804-NOC-STANTEC-UK-LTDStantec UK LtdLEGACYAug 4, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.136/298ZEN20260420-PCKWIKFIX-LTDPckwikfix LtdLEGACYApr 20, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.144/298ZEN20261015-VIDEOJET-TECHNOLOGIES-LTDVideojet Technologies LtdLEGACYOct 15, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.152/298ZEN20201102-NOC-LOGIC-BUSINESS-SYSTEMS-LTDLogic Business Systems LtdLEGACYNov 2, 2020abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.160/298ZEN20240825-NOC-IO-TEN-LIMITEDIO TEN LimitedLEGACYAug 25, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.168/298ZEN20191025-NOC-BREATHE-TECHNOLOGY-LTDBreathe Technology LtdLEGACYOct 25, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.176/298ZEN20191025-NOC-CREA8IVE-NETWORK-SOLUTIONS-LIMITEDCrea8ive Network Solutions LimitedLEGACYOct 25, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.23.192/2664ZEN20191030-NOC-HEATHHALL-BUSINESS-CENTRE-LIMITEDHeathhall Business Centre LimitedLEGACYOct 30, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.27.220/304ZEN20190718-NOC-ECLIPSE-NETWORKSEclipse NetworksLEGACYJul 18, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.8/298ZEN20230319-NOC-KEVIN-JAMES-LTDKevin James LtdLEGACYMar 19, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.24/298ZEN20230420-NOC-CRATE-UKCrate UKLEGACYApr 20, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.40/298ZEN20231116-NOC-MCL-TELECOMMCL TelecomLEGACYNov 16, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.64/298ZEN20230411-NOC-STRIDENT-LTDStrident LtdLEGACYApr 11, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.72/298ZEN20230422-NOC-DATACONNECTIVITY-LTDDataconnectivity LTDLEGACYApr 22, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.88/298ZEN20210118-NOC-NCI-TECHNOLOGIES-LTDNCI Technologies LtdLEGACYJan 18, 2021abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.96/2816ZEN20200903-NOC-NET-BUILDER-LIMITEDNet Builder LimitedLEGACYSep 3, 2020abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.112/298ZEN20220803-NOC-SOLVE-ITunknownLEGACYAug 3, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.120/298ZEN20220802-NOC-COMPUTERCENTRIC-LIMITEDComputercentric LimitedLEGACYAug 2, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.128/2732ZEN20260917-NOC-BLACK-WIDOW-LTDBlack Widow LtdLEGACYSep 17, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.160/298ZEN20260917-NOC-EVENTURA-LTDEventura LtdLEGACYSep 17, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.168/298ZEN20260917-ASPEN-SOLUTIONSAspen SolutionsLEGACYSep 17, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.176/298ZEN20260921-PISYSNET-LIMITEDPiSys.net LimitedLEGACYSep 21, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.184/298ZEN20260921-RAY-SYSTEMS-LTDRay Systems LtdLEGACYSep 21, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.192/298ZEN20240804-NOC-BLIZZARD-TELECOM-LIMITEDBlizzard Telecom LimitedLEGACYAug 4, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.28.208/2816ZEN20221020-NOC-STRAIGHT-UP-TECHNOLOGIES-UK-LTDStraight Up Technologies UK LtdLEGACYOct 20, 2022abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.8/298ZEN20230212-NOC-SOUTHERN-BUSINESS-COMMUNICATIONS-LTDSouthern Business Communications LtdLEGACYFeb 12, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.32/298ZEN20250426-NOC-WICRESOFT-UK-LTDWicresoft UK LtdLEGACYMar 18, 2025abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.56/298ZEN20231001-NOC-LUMINA-TECHNOLOGIES-LTDLumina Technologies LtdLEGACYOct 1, 2023abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.64/298ZEN20240414-NOC-BELLCOM-COMMUNICATIONS-LTDBellcom Communications LtdLEGACYAug 8, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.72/298ZEN20190808-NOC-2LOGIC-LIMITED2Logic LimitedLEGACYAug 8, 2019abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.80/298ZEN20260612-BARTON-TELECOM-SERVICES-LIMITEDBarton Telecom Services LimitedLEGACYJun 12, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.136/298ZEN20240901-NOC-PROACTIVE-NETWORKINGProactive NetworkingLEGACYSep 1, 2024abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.144/298ZEN20260924-STARK-BUILDING-MATERIALS-UK-LIMITEDSTARK Building Materials UK LimitedLEGACYSep 24, 2026abuse@zen.co.uk
via UK-ZEN
└ 51.155.29.152/298ZEN20261001-NATIONWIDE-PRODUCE-PLCNationwide Produce PlcLEGACYOct 1, 2026abuse@zen.co.uk
via UK-ZEN
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A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses
TypeAddressesShareRanges
Residential53,23281%195
Business12,28019%1,387
Mobile240.04%3

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS13037

GB
Name
Zen Internet Ltd
Type
Internet provider
Registered
Feb 25, 2000
Domain
zen.co.uk
Website
www.zen.co.uk/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
Tor exits
1