| 1 | AS52263 | Telecable Economico S.A. | 17 | 5 | 150 | 8 |
| 2 | AS11830 | ICE (Costa Rica) | 16 | 4 | 1.851 | 37 |
| 3 | AS262197 | MILLICOM CABLE COSTA RICA S.A. | 14 | 2 | 444 | 436 |
| 4 | AS263779 | Academia Nacional de Ciencias | 9 | 3 | 4 | 4 |
| 5 | AS3790 | RADIOGRAFICA COSTARRICENSE | 8 | 2 | 240 | 5 |
| 6 | AS28110 | Rack Lodge | 7 | 6 | 42 | 3 |
| 7 | AS266853 | METROCOM CR | 7 | 2 | 27 | 1 |
| 8 | AS262202 | Telefonica de Costa Rica TC | 6 | 1 | 29 | 1 |
| 9 | AS52423 | Data Miners | 6 | 3 | 27 | 42 |
| 10 | AS52228 | Cable Tica | 5 | 1 | 172 | 1 |
| 11 | AS28022 | CRISP S.A. | 3 | 1 | 16 | 1 |
| 12 | AS28317 | Boomerang Wireless | 3 | 2 | 14 | 0 |
| 13 | AS263785 | COLUMBUS NETWORKS DE COSTA RICA SOCIEDAD DE RESPONSABILIDAD LIMITADA | 3 | 1 | 12 | 2 |
| 14 | AS263248 | GCI Service Provider | 3 | 3 | 8 | 1 |
| 15 | AS27876 | American Data Networks | 2 | 1 | 52 | 0 |
| 16 | AS16973 | TAG Systems | 2 | 2 | 14 | 1 |
| 17 | AS28086 | Worldcom de Costa Rica | 2 | 2 | 14 | 1 |
| 18 | AS265636 | CoopeSantos | 2 | 2 | 12 | 0 |
| 19 | AS262149 | Sistemas Fratec S.A. | 2 | 2 | 9 | 1 |
| 20 | AS263713 | Cyberfuel | 2 | 2 | 9 | 3 |
| 21 | AS28050 | ADN Solutions | 2 | 2 | 8 | 0 |
| 22 | AS52356 | R&H International Telecom Services | 2 | 2 | 5 | 1 |
| 23 | AS52392 | Grupo Telco de Centroamerica S.A. | 2 | 2 | 5 | 9 |
| 24 | AS262171 | Telecom Logistics S.A. | 2 | 2 | 4 | 0 |
| 25 | AS263246 | Metrowireless Solutions de Costa Rica, SA | 2 | 1 | 4 | 1 |
| 26 | AS263749 | Junta Administrativa del Servicio Electrico Municipal de Cartago(JASEC) | 2 | 2 | 4 | 5 |
| 27 | AS264621 | BLUE SAT SERVICIOS ADMINISTRADOS DE TELECOMUNICACIONES SA | 2 | 2 | 4 | 0 |
| 28 | AS264654 | FIBERNET | 2 | 2 | 4 | 1 |
| 29 | AS264686 | STREET FIBER S.A. | 2 | 2 | 4 | 1 |
| 30 | AS264820 | COREBASES S.A | 2 | 2 | 3 | 0 |
| 31 | AS262152 | Banco de Costa Rica | 2 | 2 | 2 | 0 |
| 32 | AS271889 | FIBRAENCASA SOCIEDAD ANONIMA | 2 | 2 | 2 | 1 |
| 33 | AS27908 | Tracity Inc. | 2 | 1 | 1 | 0 |
| 34 | AS273147 | MUNICIPALIDAD DE CARRILLO GUANACASTE | 2 | 1 | 1 | 3 |
| 35 | AS274877 | JOSE PABLO ARIAS MORA | 2 | 2 | 1 | 1 |
| 36 | AS271891 | UNIVERSIDAD ESTATAL A DISTANCIA | 2 | 0 | 0 | 14 |
| 37 | AS262145 | Cooperativa de Electrificación Rural de San Carlos | 1 | 1 | 43 | 13 |
| 38 | AS263683 | Universidad de Costa Rica | 1 | 1 | 34 | 4 |
| 39 | AS262241 | Cooperativa de Electrificación Rural de Alfaro Ruiz | 1 | 1 | 24 | 0 |
| 40 | AS263762 | COOPERATIVA DE ELECTRIFICACIÓN RURAL DE GUANACASTE | 1 | 1 | 17 | 5 |
| 41 | AS262184 | IBW-CR | 1 | 1 | 13 | 0 |
| 42 | AS262252 | Servicios Technologicos Antares de Costa Rica, S.A. | 1 | 1 | 8 | 1 |
| 43 | AS263698 | TRANSDATELECOM | 1 | 1 | 6 | 0 |
| 44 | AS52342 | Critical Colocation | 1 | 1 | 5 | 1 |
| 45 | AS264615 | INASOL Telecom | 1 | 1 | 4 | 0 |
| 46 | AS266665 | IDEAS GLORIS SOCIEDAD ANONIMA | 1 | 1 | 4 | 0 |
| 47 | AS267858 | COMUNICACIONES TELEFONICAS TICOLINEA S.A | 1 | 1 | 4 | 0 |
| 48 | AS52408 | Itech Soluciones S.A | 1 | 1 | 3 | 0 |
| 49 | AS52470 | CONARE | 1 | 1 | 3 | 1 |
| 50 | AS265873 | FIBER TO THE HOME FTTH SA | 1 | 1 | 3 | 0 |
| 51 | AS263232 | ESPH.SA | 1 | 1 | 2 | 1 |
| 52 | AS266875 | WIMAX NETWORKS SRL | 1 | 1 | 2 | 0 |
| 53 | AS270087 | COMUNICACION CONSTANTE S.A | 1 | 1 | 2 | 0 |
| 54 | AS273139 | | 1 | 1 | 2 | 1 |
| 55 | AS52395 | Multiflex Payment Services Ltda | 1 | 1 | 1 | 0 |
| 56 | AS52429 | BAC LATAM SSC SOCIEDAD ANONIMA | 1 | 1 | 1 | 0 |
| 57 | AS52463 | Banco Nacional de Costa Rica (BNCR) | 1 | 1 | 1 | 0 |
| 58 | AS61464 | BADJELLY S.A. | 1 | 1 | 1 | 0 |
| 59 | AS61479 | Dole Shared Services Limited | 1 | 1 | 1 | 0 |
| 60 | AS208261 | Pomme Télécom | 1 | 1 | 1 | 0 |
| 61 | AS263220 | BANCO PROMERICA COSTA RICA | 1 | 1 | 1 | 0 |
| 62 | AS263796 | Navégalo OT | 1 | 1 | 1 | 0 |
| 63 | AS263831 | Contraloria General de la Republica | 1 | 1 | 1 | 1 |
| 64 | AS264644 | INFORMATION TECHNOLOGIES OUTSOURCING | 1 | 1 | 1 | 0 |
| 65 | AS266717 | Academia Nacional de Ciencias | 1 | 1 | 1 | 1 |
| 66 | AS266719 | Academia Nacional de Ciencias | 1 | 1 | 1 | 0 |
| 67 | AS266746 | CONTINUM DATACENTER SOCIEDAD ANONIMA | 1 | 1 | 1 | 0 |
| 68 | AS267692 | UNIVERSIDAD NACIONAL | 1 | 1 | 1 | 0 |
| 69 | AS267698 | COMUNICACION CONSTANTE S.A | 1 | 1 | 1 | 0 |
| 70 | AS267740 | UNIVERSIDAD U LATINA SRL | 1 | 1 | 1 | 0 |
| 71 | AS269884 | ENTERPRISE WIRELESS SOLUTIONS SOCIEDAD DE RESPONSABILIDAD LIMITADA | 1 | 1 | 1 | 0 |
| 72 | AS270058 | CABLE CENTRO SOCIEDAD ANONIMA | 1 | 1 | 1 | 1 |
| 73 | AS271960 | MIRA NETWORKS SOCIEDAD DE RESPONSABILIDAD LIMITADA | 1 | 1 | 1 | 0 |
| 74 | AS273830 | CABLE CARIBE S.A. | 1 | 1 | 1 | 0 |
| 75 | AS273987 | BANCO POPULAR Y DE DESARROLLO COMUNAL | 1 | 1 | 1 | 0 |
| 76 | AS274108 | CABLE VISION DE OCCIDENTE SOCIEDAD ANONIMA | 1 | 1 | 1 | 0 |
| 77 | AS274133 | Tribunal Supremo de Elecciones | 1 | 1 | 1 | 0 |
| 78 | AS274239 | RING CENTRALES DE COSTA RICA SOCIEDAD ANONIMA | 1 | 1 | 1 | 1 |
| 79 | AS395299 | THE WESTERN UNION COMPANY | 1 | 1 | 1 | 0 |
| 80 | AS274079 | ANTARES WIFI SOCIEDAD ANONIMA | 1 | 0 | 0 | 1 |
Autonome Systeme in Costa Rica