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
601 Unitary enterprise A1 642
602 Taiwan Fixed Network, Telco and Network Service Provider. 642
603 Frogfoot Networks 639
604 Flexential Colorado Corp. 639
605 Starhub Ltd. GLEIF verified 638
606 HOS-1815410 638
607 HNSL-HK 636
608 Robinsons Bank Corporation GLEIF verified 636
609 GoDaddy.com, LLC GLEIF verified 636
610 FR-INDIGO-PARK 635
611 Gujarat Telelink Pvt Ltd 635
612 Naya Tel (Pvt.) Limited 635
613 CMC Telecom Infrastructure Company 634
614 AVONET 633
615 WASU-BB 631
616 FR-INDIGO-PARK--LB_INTERNET 629
617 UAB "Baltnetos komunikacijos" ORG-BA18-RIPE 629
618 HONG,GUANWAN 629
619 DLIVE 626
620 QuickPacket, LLC 626
621 LEPIDASCPA 626
622 PCH AS3856 625
623 NeoFiber Communications inc. 625
624 OZSERVERS 624
625 Amazon Technologies Inc. GLEIF verified 623
626 VIETTEL (CAMBODIA) PTE., LTD 622
627 SkyNet Ltd. GLEIF verified 622
628 TIN 622
629 Netsec Limited 622
630 UBERMETRICS TECHNOLOGIES GMBH UBERMETRICS-TECHNOLOGIES-GMBH 620
631 Radware Ltd 620
632 FBTWOZERO 619
633 Palestine Telecommunications Company (PALTEL) 619
634 Administracion Nacional de Telecomunicaciones 618
635 FR-CA-TECHNOLOGIES--LB_INTERNET 616
636 Prager Connect GmbH GLEIF verified 615
637 PINDROP 614
638 PT Indonesia Comnets Plus 613
639 Orion Network Limited 613
640 Sri Lanka Telecom Ltd ORG-SLTL1-AP 613
641 SWITCH, LTD GLEIF verified 613
642 Research Organization of Information and Systems, National Institute of Informatics 612
643 ROCHESPA 611
644 TEDE-INFRA 611
645 FASTWEB-VULA_Statico 609
646 Tcloudnet, Inc 607
647 Kenya Education Network 605
648 Netflix Inc GLEIF verified 603
649 Netflix Streaming Services Inc. 603
650 Bank of America, National Association GLEIF verified 601
651 Rostelecom Rostelecom_net 600
652 MARKTGEMEIND-HWY-AT 599
653 FR-COVEA-AGORA--LB_INTERNET 599
654 CNSERVERS LLC 597
655 Vaioni Group Ltd 597
656 Fort IT Services Ltd 597
657 FR-INFOMIL 597
658 Teletek Bulut Bilisim ve Iletisim Hizmetleri A.S. ORG-TBBv1-RIPE 597
659 MTS PJSC ORG-ZM1-RIPE 596
660 Comporium, Inc 596
661 Vodafone Telekomunikasyon A.S. GLEIF verified 594
662 FIVENET-IN 592
663 WorkTitans B.V. 590
664 Vodafone-panafon Hellenic Telecommunications Company SA 589
665 TT Mobil Iletisim Hizmetleri A.S GLEIF verified 589
666 L121949 589
667 LeaseWeb Netherlands B.V. GLEIF verified 588
668 Broadnet Europe France 588
669 Vexus Fiber GLEIF verified 586
670 IBIS-PA-NET 585
671 Telenet BV GLEIF verified 585
672 SHYAM SPECTRA PVT LTD 585
673 Legaco Networks B.V. 584
674 OTRS-AG GLEIF verified 584
675 ITPOLAND 584
676 VOCUS PTY LTD GLEIF verified 583
677 TierPoint, LLC GLEIF verified 583
678 National Aeronautics and Space Administration 581
679 NHNCLOUD 581
680 Ishan's Network 581
681 Sprious LLC 581
682 CHINANET SiChuan Telecom Internet Data Center 581
683 STC BAHRAIN B.S.C CLOSED 580
684 SingNet Pte Ltd 580
685 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. 579
686 DAMA-NV 579
687 FR-BASIC-FIT-II 578
688 IFX Corporation 577
689 L107034 577
690 Microscan Internet Limited 577
691 ENTERPRISE-CLIENT 574
692 Webzilla B.V. 574
693 NTS workspace AG 573
694 L67095 570
695 SKYDIGITAL TELECOM LTD 569
696 FR-BASIC-FIT-II--LB_INTERNET 569
697 FR-INFOMIL--LB_INTERNET 568
698 Zscaler Switzerland GmbH GLEIF verified 567
699 Telefónica Celular de Bolivia S.A. 567
700 BE-MOBILE-NV 567
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