| 37.9.192.0/21 | CZ-CEZNET21-20111215 | CEZNET s.r.o., CZ |
| 77.92.192.0/19 | CZ-CEZNET21-20070509 | CEZNET s.r.o., CZ |
| 85.92.32.0/19 | CZ-CEZNET21-20041202 | CEZNET s.r.o., CZ |
| 91.109.32.0/21 | CZ-CEZNET21-20120618 | CEZNET s.r.o., CZ |
| 185.157.196.0/22 | CZ-CEZNET21-20160629 | CEZNET s.r.o., CZ |
| 188.244.48.0/20 | CZ-CEZNET21-20090731 | CEZNET s.r.o., CZ |
| 212.111.0.0/19 | CZ-CEZNET21-981112 | CEZNET s.r.o., CZ |
uu: 174, 1299, 6461, 6939 u4: 174, 1299, 6461, 6939 u6: 174, 1299, 6939 dd: 6740, 49580, 211137 d4: 6740, 49580, 211137 d6:
| AS174 | 🔼 upstream | COGENT-174 Cogent Communications LLC, US |
| AS1299 | 🔼 upstream | TWELVE99 Arelion Sweden AB, SE |
| AS1764 | ➡️ peer | NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| AS4455 | ➡️ peer | BSO IX Reach Ltd, GB |
| AS6204 | ➡️ peer | ZET-NET INTERKVM HOST SRL, RO |
| AS6461 | 🔼 upstream | ZAYO-6461 Zayo Bandwidth, US |
| AS6663 | ➡️ peer | TTI-NET Euroweb Romania S.R.L., RO |
| AS6740 | ➤ downstream | INEXT-CZ-ADA CEZNET s.r.o., CZ |
| AS6881 | ➡️ peer | NIXCZ NIX.CZ z.s.p.o., CZ |
| AS6939 | 🔼 upstream | HURRICANE Hurricane Electric LLC, US |
| AS8218 | ➡️ peer | NEO-ASN Zayo Infrastructure France SA, FR |
| AS8220 | ➡️ peer | COLT COLT Technology Services Group Limited, GB |
| AS14840 | ➡️ peer | BRDIGITAL-TELECOM BR.Digital Telecom, BR |
| AS24482 | ➡️ peer | SGGS-AS-AP SG.GS, SG |
| AS29504 | ➡️ peer | LBCFREE Freenet Liberec z.s., CZ |
| AS36236 | ➡️ peer | NETACTUATE NetActuate Inc, US |
| AS39791 | ➡️ peer | TPS-AS Telco Pro Services a. s., CZ |
| AS40994 | ➡️ peer | ALWYZON Hohl IT e.U., AT |
| AS49544 | ➡️ peer | I3DNET i3D.net B.V, NL |
| AS49580 | ➤ downstream | MONETPLUS-AS Monet + a.s., CZ |
| AS51184 | ➡️ peer | FONIRA Fonira Telekom GmbH, AT |
| AS198150 | ➡️ peer | SIACOM-AS SIACOM JSC, GE |
| AS211137 | ➤ downstream | ISPSERVICES ISP Services spol. s.r.o., CZ |