Top organizations by netblock count

The largest organisations in our index, ranked by number of registered netblocks. Last computed 2026-07-05.

# Organisation Attribution Netblocks
101 Shenzhen Tencent Computer Systems Company Limited GLEIF verified 3,410
102 Korea Telecom 3,397
103 Wavenet Limited GLEIF verified 3,388
104 Vodafone Data 3,381
105 ONE-BUSINESS 3,349
106 Hangzhou Alibaba Advertising Co.,Ltd. GLEIF verified 3,341
107 FR-CREDIT-AGRICOLE-TECHNOLOGIES--LB_INTERNET 3,319
108 NINENINENINES 3,314
109 Init7 (Switzerland) Ltd. 3,296
110 CenturyLink Communications, LLC GLEIF verified 3,289
111 Claro NXT Telecomunicacoes Ltda GLEIF verified 3,283
112 ORG-STaN1-RIPE 3,255
113 NONE 3,253
114 ORG-FDiS1-RIPE 3,238
115 ORG-BNA1-RIPE 3,218
116 metro_ethernet_alsat_coklu_IP 3,213
117 COMCEL GUATEMALA S.A. 3,205
118 IPP-L-CUST-LINKS 3,156
119 ORG-LEA1-RIPE 3,150
120 a79700936 3,124
121 Mega Cable, S.A. de C.V. 3,085
122 Windstream Communications LLC GLEIF verified 3,067
123 Tata Communications Limited GLEIF verified 3,028
124 Bharat Sanchar Nigam Ltd GLEIF verified 3,004
125 RCN Corporation GLEIF verified 2,919
126 No.31,Jin-rong Street 2,902
127 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V. GLEIF verified 2,863
128 Oxylabs, UAB 2,850
129 Space Exploration Technologies Corporation GLEIF verified 2,844
130 ORG-RA18-RIPE 2,841
131 Techtel LMDS Comunicaciones Interactivas S.A. 2,832
132 Clouvider Limited 2,793
133 ORG-PISP1-RIPE 2,761
134 SimbaNET_TZ_1 2,759
135 ABONENTMGTS-MINSK 2,755
136 NTT America, Inc. GLEIF verified 2,721
137 MIKRK_GCHP 2,687
138 DIRECT 2,639
139 TRIOLAN 2,628
140 Fluency Communications Ltd GLEIF verified 2,625
141 GSSGENERALISHAREDSERVICESSCARL 2,603
142 SMARTLYIO-SOLUTIONS-OY GLEIF verified 2,582
143 Telstra International Limited GLEIF verified 2,581
144 CUP2000SPA 2,565
145 Deutsche Telekom AG GLEIF verified 2,538
146 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC GLEIF verified 2,518
147 HOS-369046 2,516
148 The Constant Company, LLC GLEIF verified 2,488
149 Reliance Jio Infocomm Limited GLEIF verified 2,487
150 NL-SNEL 2,481
151 Transtelco Inc GLEIF verified 2,472
152 Zenlayer Inc GLEIF verified 2,466
153 Apple Inc. GLEIF verified 2,447
154 FR-CREDIT-LYONNAIS--LB_INTERNET 2,413
155 Fastly, Inc. GLEIF verified 2,409
156 Hostinger International Limited GLEIF verified 2,407
157 Internet Vikings International AB GLEIF verified 2,388
158 ORG-MI5-RIPE 2,358
159 HGC Global Communications Limited GLEIF verified 2,357
160 ORG-CAGf1-RIPE 2,357
161 Rogers Communications Canada Inc. GLEIF verified 2,345
162 China Telecom (Group) GLEIF verified 2,329
163 Orange S.A. GLEIF verified 2,313
164 GTT Communications Inc. GLEIF verified 2,243
165 Sify Limited 2,230
166 iiNetLimited 2,222
167 TELEFÔNICA BRASIL S.A GLEIF verified 2,181
168 American Data Networks 2,179
169 ORG-AWNC1-AP 2,178
170 Royal Thai Armed Force Headquarters 2,176
171 MAYBANK KIM ENG SECURITIES PTE. LTD 2,174
172 LG HelloVision Corp. 2,165
173 ORG-MML1-RIPE 2,160
174 SK Broadband Co Ltd GLEIF verified 2,109
175 JSC "TIMEWEB" 2,082
176 OOREDOO TUNISIE SA 2,081
177 FBONEZERO 2,081
178 Dimension Data GLEIF verified 2,055
179 ACE CDN 2,053
180 Servers.com, Inc. 2,047
181 PACIFIC-INTERNET-BB 2,046
182 Signet B.V. GLEIF verified 2,040
183 AAPT Limited GLEIF verified 2,030
184 Beam-CLIPS-PPPoE 2,024
185 PJSC MegaFon GLEIF verified 2,016
186 TELEFONICA VENEZOLANA, C.A. 2,011
187 B3G-SANS-CLS 2,010
188 SFR-USER-DATA 1,990
189 TE-AS 1,986
190 HKBNCORP 1,981
191 CNCGROUP IP network of ShangHai IDC 1,958
192 ORG-TPCL1-AP 1,956
193 ORG-PIS3-RIPE 1,956
194 MTS PJSC GLEIF verified 1,953
195 Atlantic Broadband 1,952
196 Instituto Costarricense de Electricidad y Telecom. 1,948
197 ORG-TA44-RIPE 1,932
198 Free SAS GLEIF verified 1,928
199 RO-RCS-RDS 1,921
200 Vodafone GmbH GLEIF verified 1,920
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