| AS174 Cogent Communications, LLC | US |
| AS3257 GTT Communications Inc. | US |
| AS8866 Vivacom Bulgaria EAD | BG |
| AS41095 IPTP LTD | GB |
| AS34224 Neterra Ltd. | BG |
| AS57344 Telehouse EAD | BG |
| AS8400 TELEKOM SRBIJA a.d. | RS |
| AS44901 Belcloud LTD | US |
| AS39251 NETGUARD LLC | BG |
| AS6718 NAV COMMUNICATIONS SRL | RO |
| AS12615 Global Communication Net Plc | BG |
| AS48011 Turunc Smart Bilgisayar Teknoloji Ve Dis Ticaret Limited Sirketi | TR |
| AS31287 IPACCT CABLE Ltd | BG |
| AS41313 NOVATEL EOOD | DE |
| AS196925 Azertelecom LLC | AZ |
| AS29244 CETIN Bulgaria EAD | BG |
| AS196922 Hofmeir Media GmbH | DE |
| AS61071 NETBOX LTD | BG |
| AS60447 I NET BULGARIA | BG |
| AS39505 VESTITEL BG | BG |
| AS29030 TELECABEL PLC | BG |
| AS44814 Bulgartel AD | BG |
| AS202543 Mrejitor Ltd | BG |
| AS35761 Mitko.Com Ltd. | BG |
| AS20657 ATLANTIS BG Ltd. | BG |
| AS198228 Silistra Telecom Solutions Ltd. | BG |
| AS47697 BIX.BG Ltd. | BG |
| AS205138 Open Solutions Ltd. | BG |
| AS13004 Serbian Open Exchange DOO | RS |
| AS34569 Vivacom Bulgaria EAD | BG |
| AS60733 ZORAN PEROVIC trading as Agencija Perke.NET | RS |
| AS50020 CETIN Bulgaria EAD | BG |
| AS15669 BIX.BG Ltd. | BG |
| AS57463 NetIX Communications JSC | BG |
| AS26506 Edgio - AS26506 - OpenEdge | US |
| AS31250 Online Direct | BG |
| AS32261 Subspace | US |
| AS39533 Asympto Networks | HU |
| AS59900 Balkan Internet Exchange | BG |
