| 2 connect a.s. | 35236 | X | R | N | R | R | Y | R | N | U | N | R | R | N | R | Y | N | Y | U | R | R | R | N | Y | N | N | R | R | N | R | R | N | Y | N | R | U | N | N | N | R | U | N | N | N | N | N | R | N | U | N | R |
| 4connect s.r.o. | 51025 | R | X | Y | R | R | U | U | U | R | N | R | N | N | R | R | N | U | N | R | R | R | N | R | N | Y | R | R | R | R | R | N | Y | N | N | R | N | U | R | R | R | N | N | N | N | N | R | N | R | N | R |
| ACTIVE 24, s.r.o. | 25234 | N | Y | X | N | N | U | Y | N | Y | Y | Y | N | Y | N | N | N | N | N | D | N | N | Y | Y | N | Y | N | Y | Y | N | Y | N | Y | N | Y | Y | N | N | N | Y | Y | N | N | N | N | N | N | N | N | N | N |
| Casablanca INT s.r.o. | 15685 | R | R | N | X | N | Y | Y | Y | Y | Y | D | N | Y | N | N | Y | U | N | Y | N | Y | D | D | N | Y | Y | Y | Y | N | Y | N | Y | N | R | Y | N | N | Y | Y | Y | Y | N | N | Y | Y | N | Y | N | Y | Y |
| CentroNet, a.s. | 29321 | R | R | N | N | X | Y | N | N | N | N | R | N | N | N | N | N | U | N | N | N | N | N | R | N | N | N | Y | D | N | N | N | Y | N | R | N | N | N | N | R | N | N | N | N | N | N | R | N | N | N | R |
| CESNET, z.s.p.o. | 2852 | Y | U | U | Y | Y | X | Y | U | Y | Y | U | Y | U | U | U | Y | N | Y | Y | Y | Y | Y | Y | N | Y | U | Y | Y | Y | Y | N | Y | N | U | Y | Y | N | N | Y | Y | Y | N | N | Y | Y | N | Y | U | Y | Y |
| COOLHOUSING s.r.o. | 35592 | R | U | Y | Y | N | Y | X | Y | Y | D | R | N | N | N | Y | N | U | N | Y | N | Y | Y | R | N | Y | N | Y | Y | Y | Y | N | Y | N | R | Y | Y | N | N | Y | N | N | N | N | N | N | U | N | U | Y | R |
| CZ.NIC (projekt F-ROOT) | 30134 | N | U | N | Y | N | U | Y | X | Y | Y | N | N | N | N | N | N | N | N | N | N | Y | N | R | N | N | N | Y | Y | N | Y | N | Y | N | N | Y | N | N | N | R | N | N | N | N | N | N | N | N | N | N | N |
| CZ.NIC z.s.p.o. | 25192 | U | R | Y | Y | N | Y | Y | Y | X | Y | U | N | Y | N | N | Y | U | N | Y | N | Y | Y | R | N | Y | N | Y | Y | Y | Y | N | Y | N | U | Y | N | N | N | Y | Y | Y | N | N | Y | Y | U | N | N | Y | U |
| Dial Telecom a.s. | 29208 | N | N | Y | Y | N | Y | D | Y | Y | X | N | N | N | N | D | Y | N | Y | Y | N | Y | Y | Y | N | Y | R | D | Y | Y | Y | N | Y | N | N | Y | N | N | U | Y | Y | Y | N | N | Y | Y | N | D | N | D | N |
| Dragon Internet a.s. | 15614 | R | R | Y | D | R | U | R | N | U | N | X | U | N | U | Y | N | R | N | U | U | U | Y | R | N | Y | U | R | N | R | R | N | Y | N | R | U | Y | N | R | R | N | N | N | N | N | N | R | N | U | N | R |
| E4A s.r.l. | 34695 | R | N | N | N | N | Y | N | N | N | N | U | X | N | N | N | N | U | N | N | N | N | N | R | N | N | N | Y | N | N | N | N | N | N | U | N | N | N | N | N | N | N | N | N | N | N | U | N | N | N | U |
| ČD-Telematika a.s. | 25512 | N | N | Y | Y | N | U | N | N | Y | N | N | N | X | N | N | N | N | N | N | N | N | Y | N | N | Y | N | Y | N | N | Y | N | D | N | N | N | N | N | N | N | Y | N | N | N | N | N | N | N | N | N | U |
| Google Ireland Limited | 15169 | R | R | N | N | N | U | N | N | N | N | U | N | N | X | N | N | U | N | N | N | N | N | R | N | N | N | U | N | N | N | N | Y | N | U | N | N | N | N | U | N | N | N | N | N | N | U | N | N | N | R |
| GRAPE SC, a.s. | 47232 | Y | R | N | N | N | U | Y | N | N | D | Y | N | N | N | X | N | Y | N | N | N | N | N | N | N | N | N | Y | N | N | N | N | Y | N | N | N | N | N | N | N | N | N | N | N | N | N | R | N | N | N | R |
| GTS NOVERA s.r.o. | 2819 | N | N | N | Y | N | Y | N | N | Y | Y | N | N | N | N | N | X | N | N | Y | N | N | Y | N | N | N | N | N | Y | N | N | N | Y | N | U | Y | N | N | N | N | Y | Y | N | N | Y | Y | N | Y | N | Y | N |
| ha-vel internet s.r.o. | 15935 | Y | U | N | U | U | N | U | N | U | N | R | U | N | U | Y | N | X | N | U | U | U | N | R | N | N | U | R | U | R | U | N | Y | N | U | U | N | N | U | R | U | N | N | N | N | N | U | N | U | N | R |
| ICANN L-ROOT | 20144 | U | N | N | N | N | Y | N | N | N | Y | N | N | N | N | N | N | N | X | N | N | N | N | Y | N | Y | N | Y | N | N | R | N | Y | N | N | N | N | N | N | R | N | N | N | N | N | N | N | N | N | N | N |
| IGNUM, s.r.o. | 29134 | R | R | D | Y | N | Y | Y | N | Y | Y | U | N | N | N | N | Y | U | N | X | N | Y | Y | R | N | Y | N | R | Y | N | Y | N | Y | N | U | Y | N | N | N | R | Y | Y | N | N | Y | Y | U | N | N | Y | R |
| Invitel International CZ s.r.o. | 12301 | R | R | N | N | N | Y | N | N | N | N | U | N | N | N | N | N | U | N | N | X | N | N | N | N | N | N | N | N | N | N | N | U | N | U | N | N | N | N | N | N | N | N | N | N | N | U | N | N | N | R |
| IP Exchange GmbH | 15598 | R | R | N | Y | N | Y | Y | Y | Y | Y | U | N | N | N | N | N | U | N | Y | N | X | Y | R | N | Y | N | R | Y | N | R | N | Y | N | U | N | N | N | N | R | N | Y | N | N | Y | Y | U | N | N | Y | U |
| Ipex a.s. | 9080 | N | N | Y | D | N | Y | Y | N | Y | Y | Y | N | Y | N | N | Y | N | N | Y | N | Y | X | N | N | Y | N | Y | D | N | Y | N | Y | N | N | Y | N | N | N | Y | Y | Y | N | N | Y | Y | N | Y | N | Y | N |
| Kaora s.r.o. | 42000 | Y | R | Y | D | R | Y | R | R | R | Y | R | R | N | R | N | N | R | Y | R | N | R | N | X | N | Y | Y | R | Y | R | Y | N | Y | N | R | R | N | N | Y | R | Y | N | N | N | N | N | R | N | Y | N | R |
| Kaunas University | 44358 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | X | N | N | N | N | N | N | N | D | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| KIT digital Czech a.s. | 41711 | N | Y | Y | Y | N | Y | Y | N | Y | Y | Y | N | Y | N | N | N | N | Y | Y | N | Y | Y | Y | N | X | N | Y | Y | N | Y | N | Y | N | N | Y | N | N | N | N | Y | N | N | N | D | Y | N | Y | N | Y | N |
| LeaseWeb BV | 16265 | R | R | N | Y | N | U | N | N | N | R | U | N | N | N | N | N | U | N | N | N | N | N | Y | N | N | X | R | N | N | R | N | Y | N | U | N | N | N | N | R | N | N | N | N | N | N | U | N | N | N | R |
| LOSAN internet s.r.o. | 41824 | R | R | Y | Y | Y | Y | Y | Y | Y | D | R | Y | Y | U | Y | N | R | Y | R | N | R | Y | R | N | Y | R | X | D | R | Y | N | Y | N | R | Y | R | N | N | Y | N | R | N | N | Y | Y | R | N | U | N | R |
| Master Internet, s.r.o. | 24971 | N | R | Y | Y | D | Y | Y | Y | Y | Y | N | N | N | N | N | Y | U | N | Y | N | Y | D | Y | N | Y | N | D | X | N | Y | N | Y | N | U | Y | N | N | N | Y | Y | N | N | N | Y | Y | N | D | N | Y | U |
| MIRAMO spol. s r. o. | 34080 | R | R | N | N | N | Y | Y | N | Y | Y | R | N | N | N | N | N | R | N | N | N | N | N | R | N | N | N | R | N | X | N | N | Y | N | R | Y | N | N | N | R | N | N | N | N | N | N | R | N | N | N | R |
| NFX z.s.p.o. | 8251 | R | R | Y | Y | N | Y | Y | Y | Y | Y | R | N | Y | N | N | N | U | R | Y | N | R | Y | Y | N | Y | R | Y | Y | N | X | N | Y | N | R | Y | N | N | N | Y | N | N | N | N | Y | N | R | N | N | N | R |
| NIC.AT | 49488 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | X | U | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| NIX.CZ, z.s.p.o. | 6881 | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | N | D | Y | Y | Y | Y | Y | Y | U | Y | Y | Y | D | Y | Y | Y | Y | Y | Y | U | X | N | Y | Y | Y | U | Y | Y | Y | Y | Y | N | Y | Y | U | Y | Y | Y | Y |
| OVANET, a.s. | 39817 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | X | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| PODA a.s. | 30764 | R | N | Y | R | R | U | R | N | U | N | R | U | N | U | N | U | U | N | U | U | U | N | R | N | N | U | R | U | R | R | N | Y | N | X | U | N | N | N | R | U | N | N | N | N | N | R | N | U | N | U |
| RETN Limited | 9002 | U | R | Y | Y | N | Y | Y | Y | Y | Y | U | N | N | N | N | Y | U | N | Y | N | N | Y | R | N | Y | N | Y | Y | Y | Y | N | Y | N | U | X | N | N | N | Y | Y | N | N | N | N | N | U | N | N | Y | U |
| RIO Media a.s. | 16246 | N | N | N | N | N | Y | Y | N | N | N | Y | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | R | N | N | N | N | Y | N | N | N | X | N | N | N | U | N | U | N | N | N | N | N | N | N | N |
| RIPNDNS (MSK-IX, JSC) | 44522 | N | U | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | U | N | N | N | N | X | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Seznam.cz, a.s. | 43037 | N | R | N | Y | N | N | N | N | N | U | R | N | N | N | N | N | U | N | N | N | N | N | Y | N | N | N | N | N | N | N | N | Y | N | N | N | N | N | X | N | N | N | N | N | N | N | R | N | N | N | U |
| SkyNet, a.s. | 5407 | R | R | Y | Y | R | Y | Y | R | Y | Y | R | N | N | U | N | N | R | R | R | N | R | Y | R | N | N | R | Y | Y | R | Y | N | Y | N | R | Y | N | N | N | X | R | N | N | N | Y | N | R | N | N | Y | R |
| Sloane Park Property Trust, a.s. | 29113 | U | R | Y | Y | N | Y | N | N | Y | Y | N | N | Y | N | N | Y | U | N | Y | N | N | Y | Y | N | Y | N | N | Y | N | N | N | Y | N | U | Y | U | N | N | R | X | N | N | N | Y | Y | N | D | N | Y | U |
| SMART Comp. a.s. | 31246 | N | N | N | Y | N | Y | N | N | Y | Y | N | N | N | N | N | Y | N | N | Y | N | Y | Y | N | N | N | N | R | N | N | N | N | Y | N | N | N | N | N | N | N | N | X | N | N | Y | Y | N | D | N | Y | N |
| STAR 21 Networks, a.s. | 50495 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | Y | N | N | N | U | N | N | N | N | N | X | N | N | N | N | N | N | N | N |
| SuperNetwork, s.r.o. | 39392 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | X | N | N | N | N | N | N | N |
| T-Systems Czech Republic a.s. | 12767 | N | N | N | Y | N | Y | N | N | Y | Y | N | N | N | N | N | Y | N | N | Y | N | Y | Y | N | N | D | N | Y | Y | N | Y | N | Y | N | N | N | N | N | N | Y | Y | Y | N | N | X | Y | N | Y | U | Y | N |
| Telefónica O2 (Eurotel) | 28725 | N | N | N | Y | N | Y | N | N | Y | Y | N | N | N | N | N | Y | N | N | Y | N | Y | Y | N | N | Y | N | Y | Y | N | N | N | Y | N | N | N | N | N | N | N | Y | Y | N | N | Y | X | N | N | N | Y | N |
| Telefónica O2 Czech Republic, a.s. | 5610 | R | R | N | N | R | N | U | N | U | N | R | U | N | U | R | N | U | N | U | U | U | N | R | N | N | U | R | N | R | R | N | U | N | R | U | N | N | R | R | N | N | N | N | N | N | X | N | U | N | R |
| Tinet | 3257 | N | N | N | Y | N | Y | N | N | N | D | N | N | N | N | N | Y | N | N | N | N | N | Y | N | N | Y | N | N | D | N | N | N | Y | N | N | N | N | N | N | N | D | D | N | N | Y | N | N | X | N | Y | N |
| Vodafone Czech Republic a.s. | 16019 | U | R | N | N | N | U | U | N | N | N | U | N | N | N | N | N | U | N | N | N | N | N | Y | N | N | N | U | N | N | N | N | Y | N | U | N | N | N | N | N | N | N | N | N | U | N | U | N | X | N | U |
| VOLNÝ a.s. | 6706 | N | N | N | Y | N | Y | Y | N | Y | D | N | N | N | N | N | Y | N | N | Y | N | Y | Y | N | N | Y | N | N | Y | N | N | N | Y | N | N | Y | N | N | N | Y | Y | Y | N | N | Y | Y | N | Y | N | X | N |
| Web4U s.r.o. | 39790 | R | R | N | Y | R | Y | R | N | U | N | R | U | U | R | R | N | R | N | R | R | U | N | R | N | N | R | R | U | R | R | N | Y | N | U | U | N | N | U | R | U | N | N | N | N | N | R | N | U | N | X |
- Peering at NIX.CZ direct session
- Peering at NIX.CZ via route-server
- Direct peering outside NIX.CZ
- No peering
- Unconfirmed peering