ASN directory
The 200 largest autonomous systems by announced prefix count, with free IP intelligence lookups for every address they control. Part of ipintel.
- AS174 — COGENT-174 (9904 prefixes)
- AS4134 — CHINANET-BACKBONE No.31,Jin-rong Street (9188 prefixes)
- AS16509 — AMAZON-02 (7958 prefixes)
- AS9808 — CHINAMOBILE-CN China Mobile Communications Group Co., Ltd. (7840 prefixes)
- AS7018 — ATT-INTERNET4 (7609 prefixes)
- AS4766 — KIXS-AS-KR Korea Telecom (6440 prefixes)
- AS721 — DNIC-ASBLK-00721-00726 (5179 prefixes)
- AS749 — DNIC-AS-00749 (5168 prefixes)
- AS209 — CENTURYLINK-US-LEGACY-QWEST (4906 prefixes)
- AS701 — UUNET (4833 prefixes)
- AS3356 — LEVEL3 (4657 prefixes)
- AS20940 — AKAMAI-ASN1 (4466 prefixes)
- AS12479 — UNI2-AS (3626 prefixes)
- AS7922 — COMCAST-7922 (3616 prefixes)
- AS3257 — GTT-BACKBONE GTT (3614 prefixes)
- AS4837 — CHINA169-BACKBONE CHINA UNICOM China169 Backbone (3583 prefixes)
- AS3549 — LVLT-3549 (3452 prefixes)
- AS4538 — ERX-CERNET-BKB China Education and Research Network Center (3361 prefixes)
- AS22773 — ASN-CXA-ALL-CCI-22773-RDC (3112 prefixes)
- AS9318 — SKB-AS SK Broadband Co Ltd (2989 prefixes)
- AS8151 — UNINET (2742 prefixes)
- AS3786 — LGDACOM LG DACOM Corporation (2712 prefixes)
- AS212238 — CDNEXT (2680 prefixes)
- AS9009 — M247 (2561 prefixes)
- AS9498 — BBIL-AP BHARTI Airtel Ltd. (2261 prefixes)
- AS56046 — CMNET-JIANGSU-AP China Mobile communications corporation (2207 prefixes)
- AS7029 — WINDSTREAM (2174 prefixes)
- AS29802 — HVC-AS (2129 prefixes)
- AS12389 — ROSTELECOM-AS PJSC Rostelecom. Technical Team (2101 prefixes)
- AS2914 — NTT-DATA-2914 (2081 prefixes)
- AS140292 — CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CHINATELECOM Jiangsu province Suzhou 5G network (2003 prefixes)
- AS7713 — TELKOMNET-AS-AP PT Telekomunikasi Indonesia (1798 prefixes)
- AS2152 — CENIC-2152 (1744 prefixes)
- AS6147 — Telefonica del Peru S.A.A. (1679 prefixes)
- AS16625 — AKAMAI-AS (1644 prefixes)
- AS61568 — ALOO TELECOM - FSF TECNOLOGIA SA (1636 prefixes)
- AS45899 — VNPT-AS-VN VNPT Corp (1528 prefixes)
- AS4755 — TATACOMM-AS TATA Communications formerly VSNL is Leading ISP (1469 prefixes)
- AS714 — APPLE-ENGINEERING (1468 prefixes)
- AS3561 — CENTURYLINK-LEGACY-SAVVIS (1393 prefixes)
- AS6079 — RCN-AS (1314 prefixes)
- AS31898 — ORACLE-BMC-31898 (1296 prefixes)
- AS36352 — AS-COLOCROSSING (1291 prefixes)
- AS5650 — FRONTIER-FRTR (1289 prefixes)
- AS4780 — SEEDNET Digital United Inc. (1278 prefixes)
- AS577 — BACOM (1268 prefixes)
- AS7545 — TPG-INTERNET-AP TPG Telecom Limited (1267 prefixes)
- AS8075 — MICROSOFT-CORP-MSN-AS-BLOCK (1256 prefixes)
- AS11830 — Instituto Costarricense de Electricidad y Telecom. (1226 prefixes)
- AS20115 — CHARTER-20115 (1183 prefixes)
- AS20057 — ATT-MOBILITY-LLC-AS20057 (1180 prefixes)
- AS11492 — CABLEONE (1179 prefixes)
- AS6461 — ZAYO-6461 (1168 prefixes)
- AS7552 — VIETEL-AS-AP Viettel Group (1146 prefixes)
- AS2828 — XO-AS15 (1135 prefixes)
- AS10620 — Telmex Colombia S.A. (1129 prefixes)
- AS14618 — AMAZON-AES (1076 prefixes)
- AS56041 — CMNET-ZHEJIANG-AP China Mobile communications corporation (1040 prefixes)
- AS56 — DNIC-AS-00056 (1039 prefixes)
- AS18403 — FPT-AS-AP FPT Telecom Company (1032 prefixes)
- AS852 — TELUS Communications (1028 prefixes)
- AS24560 — AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services (1014 prefixes)
- AS5384 — EMIRATES-INTERNET Emirates Internet (1002 prefixes)
- AS9304 — HUTCHISON-AS-AP HGC Global Communications Limited (1001 prefixes)
- AS34984 — TELLCOM-AS (971 prefixes)
- AS9121 — TTNET (964 prefixes)
- AS13999 — Mega Cable, S.A. de C.V. (961 prefixes)
- AS21859 — ZEN-ECN (952 prefixes)
- AS6128 — CABLE-NET-1 (929 prefixes)
- AS4808 — CHINA169-BJ China Unicom Beijing Province Network (925 prefixes)
- AS9583 — SIFY-AS-IN Sify Limited (921 prefixes)
- AS702 — UUNET (913 prefixes)
- AS44559 — ITHOSTLINE (911 prefixes)
- AS56040 — CMNET-GUANGDONG-AP China Mobile communications corporation (903 prefixes)
- AS4847 — CNIX-AP China Networks Inter-Exchange (898 prefixes)
- AS16276 — OVH (882 prefixes)
- AS13335 — CLOUDFLARENET (877 prefixes)
- AS19108 — SUDDENLINK-COMMUNICATIONS (877 prefixes)
- AS6503 — Axtel, S.A.B. de C.V. (869 prefixes)
- AS27064 — DNIC-ASBLK-27032-27159 (848 prefixes)
- AS203020 — HOSTROYALE (845 prefixes)
- AS15830 — EQUINIX (844 prefixes)
- AS24444 — CMNET-V4SHANDONG-AS-AP Shandong Mobile Communication Company Limited (824 prefixes)
- AS3320 — DTAG Internet service provider operations (809 prefixes)
- AS1540 — DNIC-ASBLK-01534-01546 (806 prefixes)
- AS25019 — SAUDINETSTC-AS (786 prefixes)
- AS306 — DNIC-ASBLK-00306-00371 (777 prefixes)
- AS7377 — UCSD (776 prefixes)
- AS56047 — CMNET-HUNAN-AP China Mobile communications corporation (776 prefixes)
- AS62240 — CLOUVIDER Clouvider - Global ASN (776 prefixes)
- AS367 — DNIC-ASBLK-00306-00371 (769 prefixes)
- AS4812 — CHINANET-SH-AP China Telecom Group (767 prefixes)
- AS56048 — CMNET-BEIJING-AP China Mobile Communicaitons Corporation (750 prefixes)
- AS36351 — SOFTLAYER (740 prefixes)
- AS396982 — GOOGLE-CLOUD-PLATFORM (740 prefixes)
- AS9919 — NCIC-TW New Century InfoComm Tech Co., Ltd. (736 prefixes)
- AS36992 — ETISALAT-MISR (726 prefixes)
- AS4181 — TDS-AS (721 prefixes)
- AS56045 — CMNET-JIANGXI-AP China Mobile communications corporation (707 prefixes)
- AS58224 — TCI (705 prefixes)
- AS24445 — CMNET-V4HENAN-AS-AP Henan Mobile Communications Co.,Ltd (702 prefixes)
- AS3741 — IS (698 prefixes)
- AS10753 — LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE (697 prefixes)
- AS3758 — SINGNET SingNet (687 prefixes)
- AS28573 — Claro NXT Telecomunicacoes Ltda (683 prefixes)
- AS10796 — TWC-10796-MIDWEST (680 prefixes)
- AS55836 — RELIANCEJIO-IN Reliance Jio Infocomm Limited (680 prefixes)
- AS26615 — TIM SA (677 prefixes)
- AS8452 — TE-AS TE-AS (672 prefixes)
- AS5511 — OPENTRANSIT (663 prefixes)
- AS18779 — EGIHOSTING (663 prefixes)
- AS9829 — BSNL-NIB National Internet Backbone (650 prefixes)
- AS20473 — AS-VULTR (650 prefixes)
- AS4811 — CHINANET-SHANGHAI-MAN China Telecom Group (646 prefixes)
- AS12083 — WOW-INTERNET (638 prefixes)
- AS4670 — HYUNDAI-KR Shinbiro (633 prefixes)
- AS812 — ROGERS-COMMUNICATIONS (620 prefixes)
- AS20001 — TWC-20001-PACWEST (619 prefixes)
- AS46887 — CROWNCASTLE-AS46887 (612 prefixes)
- AS23724 — CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation (607 prefixes)
- AS11664 — Techtel LMDS Comunicaciones Interactivas S.A. (606 prefixes)
- AS3215 — France Telecom - Orange (603 prefixes)
- AS17557 — PKTELECOM-AS-PK Pakistan Telecommunication Company Limited (601 prefixes)
- AS396356 — LATITUDE-SH (601 prefixes)
- AS19901 — BRSPD-PUBLIC (599 prefixes)
- AS3216 — SOVAM-AS (598 prefixes)
- AS13649 — ASN-FLEXENTIAL (598 prefixes)
- AS9848 — SEJONGTELECOM-AS-KR SEJONG NETWORKS (592 prefixes)
- AS24863 — LINKdotNET-AS (590 prefixes)
- AS27947 — Telconet S.A (588 prefixes)
- AS30036 — MEDIACOM-ENTERPRISE-BUSINESS (588 prefixes)
- AS6389 — BELLSOUTH-NET-BLK (587 prefixes)
- AS33363 — BHN-33363 (584 prefixes)
- AS3816 — COLOMBIA TELECOMUNICACIONES S.A. ESP BIC (581 prefixes)
- AS8866 — VIVACOM-AS BULGARIA (581 prefixes)
- AS37518 — FIBERGRID (581 prefixes)
- AS4637 — ASN-TELSTRA-GLOBAL Telstra Global (579 prefixes)
- AS2907 — SINET-AS Research Organization of Information and Systems, National Institute of Informatics (575 prefixes)
- AS19429 — ETB - Colombia (574 prefixes)
- AS8167 — V tal (572 prefixes)
- AS7470 — TRUEINTERNET-AS-AP TRUE INTERNET Co.,Ltd. (569 prefixes)
- AS132203 — TENCENT-NET-AP-CN Tencent Building, Kejizhongyi Avenue (563 prefixes)
- AS6167 — CELLCO-PART (560 prefixes)
- AS23969 — TOT-NET TOT Public Company Limited (559 prefixes)
- AS7303 — Telecom Argentina S.A. (554 prefixes)
- AS136787 — PACKETHUBSA-AS-AP PacketHub S.A. (550 prefixes)
- AS11404 — AS-WAVE-1 (547 prefixes)
- AS11172 — Alestra, S. de R.L. de C.V. (543 prefixes)
- AS14754 — TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA (543 prefixes)
- AS4515 — PCCW-AS-AP PCCW IMS Ltd PCCW Business Internet Access (541 prefixes)
- AS5056 — AUREON-5056 (540 prefixes)
- AS29119 — SERVIHOSTING-AS AireNetworks (540 prefixes)
- AS45102 — ALIBABA-CN-NET Alibaba US Technology Co., Ltd. (540 prefixes)
- AS9198 — KAZTELECOM-AS (539 prefixes)
- AS11427 — TWC-11427-TEXAS (537 prefixes)
- AS202656 — XSERVERCLOUD (537 prefixes)
- AS855 — CANET-ASN-4 (536 prefixes)
- AS2764 — AAPT AAPT Limited (536 prefixes)
- AS30058 — FDCSERVERS (536 prefixes)
- AS9316 — DACOM-PUBNETPLUS-AS-KR DACOM-PUBNETPLUS (535 prefixes)
- AS8560 — IONOS-AS This is the joint network for IONOS, Fasthosts, Arsys, 1&1 Mail and Media and 1&1 Telecom. Formerly known as 1&1 Internet SE. (532 prefixes)
- AS18881 — TELEFONICA BRASIL S.A (525 prefixes)
- AS2516 — KDDI KDDI CORPORATION (522 prefixes)
- AS14080 — Telmex Colombia S.A. (520 prefixes)
- AS62904 — AS62904 - Eonix Corporation (520 prefixes)
- AS8851 — EDGE ta GCI Com (519 prefixes)
- AS37457 — Telkom-Internet (510 prefixes)
- AS2856 — BT-UK-AS BTnet UK Regional network (506 prefixes)
- AS15924 — BORUSANTELEKOM-AS (505 prefixes)
- AS6327 — SHAW (503 prefixes)
- AS24400 — CMNET-V4SHANGHAI-AS-AP Shanghai Mobile Communications Co.,Ltd. (500 prefixes)
- AS17561 — LCS-AS-AP LARUS Limited (497 prefixes)
- AS5972 — AS5972 (493 prefixes)
- AS37963 — ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd. (492 prefixes)
- AS11776 — ATLANTICBB-JOHNSTOWN (488 prefixes)
- AS17816 — CHINA169-GZ China Unicom IP network China169 Guangdong province (487 prefixes)
- AS8881 — VERSATEL (473 prefixes)
- AS18809 — Cable Onda (473 prefixes)
- AS140293 — CHINATELECOM-JIANGSU-CHANGZHOU-5G-NETWORK CHINATELECOM Jiangsu province Changzhou 5G network (470 prefixes)
- AS2379 — CENTURYLINK-LEGACY-EMBARQ-WNPK (461 prefixes)
- AS6939 — HURRICANE (461 prefixes)
- AS9924 — TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. (461 prefixes)
- AS5065 — BUNNY-COMMUNICATIONS-GLOBAL (450 prefixes)
- AS8359 — MTS (450 prefixes)
- AS7385 — ABUL-14-7385 (449 prefixes)
- AS24547 — CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited (449 prefixes)
- AS2514 — INFOSPHERE NTT PC Communications, Inc. (446 prefixes)
- AS57043 — HOSTKEY-AS (444 prefixes)
- AS12252 — America Movil Peru S.A.C. (443 prefixes)
- AS18734 — Operbes, S.A. de C.V. (439 prefixes)
- AS8103 — STATE-OF-FLA (437 prefixes)
- AS4750 — CSLOXINFO-AS-AP CS LOXINFO PUBLIC COMPANY LIMITED (432 prefixes)
- AS13768 — COGECO-PEER1 (431 prefixes)
- AS22561 — CENTURYLINK-LEGACY-LIGHTCORE (429 prefixes)
- AS23089 — HOTWIRE-COMMUNICATIONS (429 prefixes)
- AS9457 — DREAMX-AS DREAMLINE CO. (428 prefixes)
- AS17378 — AS17378 - TierPoint, LLC (427 prefixes)
- AS22616 — ZSCALER-SJC1 (421 prefixes)
- AS3491 — CONSOLE-CONNECT-ASN (418 prefixes)
- AS18101 — RELIANCE-COMMUNICATIONS-IN Reliance Communications Ltd.DAKC MUMBAI (414 prefixes)