Registry Service Providers (RSP) Directory
Registry Service Providers operate the mission-critical technical infrastructure of top-level domains: the Shared Registration System (SRS), EPP provisioning gateways, DNS anycast constellations, and RDAP directory lookup endpoints.
| Backend Provider (RSP) | Operating Entity | TLDs Powered | Combined Active Domains | Operated Extensions | Technical Portal |
|---|---|---|---|---|---|
| Verisign Shared Registration System | VeriSign Global Registry Services | 3 | 172,528,294 | .com , .net , .barclays | RSP Portal → |
| Identity Digital RSP | Identity Digital Inc. | 8 | 19,025,286 | .org , .info , .top , .shop , .bmw , .paris , .xn--fiqs8s , .blanco | RSP Portal → |
| CentralNic Registry RSP | CentralNic Group PLC | 5 | 7,918,570 | .xyz , .online , .site , .tech , .wed | RSP Portal → |
| GoDaddy Registry Services | GoDaddy Registry, LLC | 5 | 3,676,593 | .biz , .club , .vip , .nyc , .tokyo | RSP Portal → |
| Google Cloud Registry Engine | Google LLC | 3 | 1,955,137 | .app , .dev , .google | RSP Portal → |
| Nominet RSP | Nominet UK | 3 | 62,092 | .apple , .london , .uk | RSP Portal → |
| DENIC Registry System | DENIC eG | 1 | 0 | .de | RSP Portal → |
| JPRS Registry Engine | Japan Registry Services Co., Ltd. | 1 | 0 | .jp | RSP Portal → |