Top organizations by netblock count

The largest organisations in our index, ranked by number of registered netblocks. Last computed 2026-11-01.

This ranks individual registry-name clusters. Where one organisation holds space under several different names, browse organisation entities to see them grouped.

# Organisation Attribution Netblocks
801 FR-MANPOWER--LB_INTERNET 491
802 Volvo Information Technology AB 491
803 WoodyNet, Inc. 490
804 FR-GIFI--LB_INTERNET 490
805 Cloudie Limited 489
806 Open Fiber S.P.A. GLEIF verified 489
807 PlusServer GmbH GLEIF verified 488
808 INTERNEXA S.A. E.S.P 488
809 FASTWEB-INTERNET-MOA 487
810 Vodafone Libertel B.V. GLEIF verified 486
811 SEMAPHORE-TECHNOLOGIES-DOO 486
812 Companhia Itabirana Telecomunicações Ltda 482
813 RITUALS-COSMETICS-ENTERPRISE-B-V-RETAIL-GTT 480
814 VITEBSK-BYFLY 480
815 Speedsurf 480
816 N&K TECNOLOGIA LTDA 479
817 HINET-NET 479
818 Cafe-AFGHANTELECOM-AF 479
819 TV AZTECA SUCURSAL COLOMBIA 478
820 GCI Network Solutions Limited 477
821 CLOUVIDER-HB-CLIENT-2916 477
822 BOD 477
823 NTT PC Communications, Inc. 475
824 Equinix, Inc. GLEIF verified 473
825 HOS-703081 473
826 Cablevisión, S.A. de C.V. 472
827 MAMUT RAHAL SOFTWARE - FZCO 471
828 MIROGLIOSPA 470
829 Baykov Ilya Sergeevich 470
830 Rackspace Hosting GLEIF verified 470
831 FR-CNAF 469
832 Air Force Systems Networking 469
833 Privex Inc. 469
834 PJSC MegaFon ORG-OM1-RIPE 468
835 ST-NET-NL 467
836 Clarity Telecom LLC GLEIF verified 466
837 Kamatera, Inc. 466
838 ORG-De8-RIPE 464
839 BLACKSMITH SOFTWARE INC BLACKSMITH-SOFTWARE-INC 464
840 FR-U-GIE-IRIS--LB_INTERNET 464
841 FBFIVEZEROZERO 463
842 HOS-585343 463
843 LLC Vpsville 462
844 GPON_FTTH_SERVICES 462
845 HOS-219294 462
846 Tose'h Fanavari Ertebabat Pasargad Arian Co. PJS 462
847 LPP 461
848 Quality Service Provider BV 461
849 ALIEN GAIN OUE ALIEN-GAIN-OUE 460
850 REXEL FRANCE SASU 460
851 Moldtelecom SA 460
852 F5, Inc. 459
853 XTRA TELECOM S.A. 459
854 LLC "KomTehCentr" 458
855 CDNetworks Russia 457
856 Internet Utilities NA LLC 456
857 Fast Communication Company Ltd GLEIF verified 456
858 PROXXIMA TELECOMUNICACOES SA 456
859 SkyQuantum Internet Service 455
860 Partner Communications Ltd. GLEIF verified 455
861 Hot-Net internet services Ltd. 454
862 Starbow Ltd. 454
863 THUNDERNET, C.A. 454
864 EDIS GmbH GLEIF verified 454
865 China Education and Research Network (CERNET) 454
866 Quality Net General Trading & Contracting Company 454
867 SINGNET-PTE-SG 453
868 Cable Tica GLEIF verified 453
869 KABINET 453
870 Sharktech Inc. 453
871 China Telecom Next Generation Carrier Network 452
872 F.N.S. HOLDINGS LIMITED GLEIF verified 452
873 RoyaleHosting BV 452
874 Voxility LLP 450
875 G-Core Labs S.A. ORG-WIG6-RIPE 450
876 LGA-iFibrePre-SG 450
877 a38762501 449
878 WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD. 449
879 Beanfield Technologies Inc. GLEIF verified 449
880 HP Inc. 449
881 Ecuadortelecom S.A. 448
882 STARNETMD 448
883 RadioMovil Dipsa, S.A. de C.V. 448
884 PT Mora Telematika Indonesia 448
885 Accenture UK Limited GLEIF verified 447
886 VTR BANDA ANCHA S.A. 447
887 Tier.Net Technologies LLC 446
888 EWE TEL GmbH ORG-ETG2-RIPE 446
889 BRASIL DIGITAL SERVIÇOS DE INFORMATICA E COMERCIO 446
890 GitHub, Inc. GLEIF verified 445
891 DXTNET 443
892 BroadbandONE, LLC 443
893 HOS-694574 442
894 Chiron Management Company Limited 442
895 ASTRAZENECASPA 441
896 Fidelity Communication International Inc. 440
897 ON EMPRESAS S.A.C. 440
898 Chunghwa Telecom Co., Ltd. 439
899 Metronet LLC GLEIF verified 439
900 Scancom Limited GLEIF verified 439
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