| AS51557 | TR-ISIMTESCIL-20201202 Isimtescil Bilisim A.S. |  | |
| AS51559 | Netinternet (Netinternet) | | |
| AS51560 | GRESCHITZ Greschitz Management GmbH |  | |
| AS51561 | ICUK Computing Services Ltd (ICUK.net) |  | |
| AS51562 | almazovcentre Comfortel Ltd. |  | |
| AS51564 | TWW-HU01 Transcom Hungary Kft. |  | |
| AS51565 | SI-HC-CENTER HC CENTER druzba za informacijske tehnologije d.o.o. |  | |
| AS51566 | TURKPATENT-AS TURK PATENT ENSTITUSU | | |
| AS51567 | MESSER-IS Messer Information Services GmbH |  | |
| AS51569 | FIBERING (Dialogicnet S.r.l.) |  | |
| AS51570 | SPB-AS Perspectiva Ltd. | | |
| AS51571 | Protechnics Protechnics ICT BV |  | |
| AS51572 | CERULEAN Cerulean Solutions Limited | | |
| AS51573 | XLAB-AS XLAB razvoj programske opreme in svetovanje d.o.o. | | |
| AS51575 | YURTICI-KARGO-Net | ||
| AS51576 | IPBROADCAST-AS IP Broadcast GmbH | | |
| AS51577 | Styria IT Solutions d.o.o. (Styria Media Group AG) |  | |
| AS51578 | ASIT-VEGA Limited Liabillity Company 'IT-VEGA' | | |
| AS51579 | CORP-PARTNER-AS Korporatvniy partner Ltd | | |
| AS51580 | Time-Net AS51580 (TIMENET) | | |
| AS51581 | Profonika-BG Profonika EOOD |  | |
| AS51582 | DCC-BG Cifrova Kabelna Korporacia EOOD | | |
| AS51583 | KTS-AS LLC "Kuzbass phone networks" | | |
| AS51584 | ASZEPTER ZepterBank Closed joint-stock company |  | |
| AS51585 | ACIBADEM-ASN | ||
| AS51588 | SESAN SESAN SERVICE NUMERIQUE DE SANTE GCS |  | |
| AS51589 | FAITH-ASN Faith-Net S.C. Robert Wrobel, Stanislaw Sutkowski |  | |
| AS51590 | ARONET-AS PRZEDSIEBIORSTWO HANDLOWOPRODUKCYJNOUSLUGOWE "ARONET" ANDRZEJ OLSZEWSKI | | |
| AS51591 | Shtoda-as Private Entrepreneur Shtoda Andrey Viktorovich |  | |
| AS51592 | ASSVIFTTELECOM OOO Svift Telecom | | |
| AS51593 | GEOLIFE-AS MetaSolution Rus Limited Liability Company | | |
| AS51594 | AURIGA Auriga AB |  | |
| AS51595 | ITELLIGENCE-DK-AS itelligence a/s |  | |
| AS51596 | RUSTEKO Ltd. (RUSTEKO) | | |
| AS51597 | FASTTELECOM LTD (FASTTELECOM LTD) | | |
| AS51598 | Nehlsen (Nehlsen) | | |
| AS51599 | PRIMORNEFT-NET NNK-Primornefteproduct JSC | | |
| AS51600 | JSCB-ENISEY-AS Joint Stock Commercial Bank Enisey (Public JSC) | | |
| AS51601 | IPTP (IPTP) | ||
| AS51602 | BEGAERO-AS AD Aerodrom 'Nikola Tesla' Beograd |  | |
| AS51603 | ACME Internet Ltd (Spilsby Internet Solutions) | | |
| AS51604 | EKAT-AS JSC "ER-Telecom Holding" Yekaterinburg Branch | | |
| AS51605 | XS Software JSCo (XS-SOFTWARE) | | |
| AS51606 | GLOBICO-AS Globico Limited |  | |
| AS51607 | IpMedia-Sochi IpMedia Sochi LTD | | |
| AS51608 | FLSmidth-AS FLSmidth A/S | | |
| AS51609 | AULMARK-LIMITED AULMARK LIMITED | | |
| AS51610 | BM2ME | ||
| AS51612 | ALFATEL-AS Alfatel plus Ltd | | |
| AS51613 | KOMUS-AS TC Komus Ltd. | |