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
401 AVATEL TELECOM, SA GLEIF verified 933
402 LG DACOM Corporation 933
403 FR-AXA-FRANCE--LB_INTERNET 933
404 Itility Limited ORG-IL332-RIPE 921
405 New Century InfoComm Tech Co., Ltd. 920
406 Hotwire Communications GLEIF verified 918
407 Unitas Global 918
408 Cisco OpenDNS, LLC 917
409 Yahoo Holdings Inc. 913
410 B2 Net Solutions Inc. 911
411 Net at Once Sweden AB ORG-NaOA1-RIPE 910
412 FR-ADECCO--LB_INTERNET 908
413 CLOUVIDER-HB-CLIENT-2404 906
414 Facebook, Inc. 905
415 MILLICOM CABLE COSTA RICA S.A. GLEIF verified 902
416 Silicon Sky Consulting 902
417 COLT-JP 899
418 velia.net Internetdienste GmbH 899
419 Cable Onda GLEIF verified 897
420 Kaopu Cloud HK Limited 896
421 MOBIFONE Corporation 894
422 Tikona Infinet Ltd. 887
423 PAVLOV MEDIA INC GLEIF verified 886
424 TIWS-SMART-NETECONOMY 881
425 Corporación Telemic C.A. 880
426 Unitymedia-B2B-NET 878
427 NSS S.A. GLEIF verified 873
428 Ote SA (Hellenic Telecommunications Organisation) GLEIF verified 872
429 BT-CUST-RESERVED-NET 868
430 LITE CLOUD INC GLEIF verified 866
431 TESNETWORK 865
432 STICHTING_DUWO 864
433 Baxet Group Inc. 860
434 China Networks Inter-Exchange 859
435 RITUALS-GTT 858
436 Telenor A/S ORG-SA20-RIPE 858
437 PE-CE_WAN 856
438 FR-POMPAC-DEVELOPPEMENT--LB_INTERNET 855
439 Pacific Internet Pte Ltd 854
440 L99680 854
441 Iron Mountain Data Center 853
442 Axtel, S.A.B. de C.V. 851
443 Airtel Networks Limited GLEIF verified 846
444 BUNNYWAY, informacijske storitve d.o.o. 843
445 TBC Corporation GLEIF verified 839
446 ETB - Colombia 839
447 1&1 Versatel GmbH GLEIF verified 837
448 Swisscom (Schweiz) AG GLEIF verified 837
449 Mobile Telecom-Service LLP 834
450 Iran Cell Service and Communication Company 832
451 CHINANET Guangdong province Shenzhen MAN network 832
452 Golden Telecom LLC 831
453 Wananchi Group (Kenya) Limited 830
454 Realmove Company Limited 828
455 BT-CORPORATE 828
456 IDC, China Telecommunications Corporation 827
457 JRB 824
458 Florida Department of Management Services - Division of Telecommunications 821
459 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED 818
460 intercolo GmbH 817
461 Elisa Corporation GLEIF verified 817
462 Atria Convergence Technologies Pvt. Ltd., GLEIF verified 812
463 Xneelo (Pty) Ltd 808
464 NOS COMUNICACOES, S.A. ORG-TPS1-RIPE 807
465 Netia SA ORG-NTS2-RIPE 807
466 Alliance Broadband Services Pvt. Ltd. 802
467 CENIC 798
468 HUAWEI INTERNATIONAL PTE. LTD. GLEIF verified 797
469 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH ORG-NLTu1-RIPE 791
470 ECO-D1102721-NET 785
471 Spark Ventures GLEIF verified 785
472 xTom GmbH 783
473 Eonix Corporation 781
474 XS4ALL-CUST 781
475 Telecom Algeria 781
476 SingTel Optus Pty Ltd 780
477 Respina Networks & Beyond PJSC 778
478 Shared Services Canada 777
479 JIANGSUGROUP 776
480 JAZZWORLD PAKISTAN LIMITED 776
481 Pioneer Elabs Ltd. GLEIF verified 773
482 PT Aplikanusa Lintasarta 771
483 SkyWire (PTY) LTD GLEIF verified 770
484 ACTION-SERVICE-DISTRIBUTIE-B-V-GTT 768
485 PT XL Axiata Tbk GLEIF verified 766
486 MitaX Network 766
487 Hughes Network Systems, LLC GLEIF verified 765
488 Vyve Broadband 763
489 BT 763
490 COOP Sverige AB GLEIF verified 762
491 BYXC 761
492 Nebula Global LLC 753
493 CONSULNETWORK LTDA 752
494 AEZA GROUP LLC GLEIF verified 752
495 PT. Telekomunikasi Selular 751
496 PCCW IMS Limited GLEIF verified 749
497 BIZONEFIVE 748
498 NetActuate, Inc 746
499 JCOM Co., Ltd. GLEIF verified 746
500 Lumen Technologies UK Limited ORG-LC4-RIPE 746
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