| UU.NET | CSC Corporate Domains, Inc. | auth00.ns.uu.net auth200.ns.uu.net auth210.ns.uu.net auth60.ns.uu.net | 20.05.1987 | 21.05.2025 |
| MCI.COM | CSC Corporate Domains, Inc. | auth-ns1.verizonbusiness.com auth-ns2.verizonbusiness.com auth01.ns.uu.net auth200.ns.uu.net auth210.ns.uu.net auth50.ns.uu.net auth61.ns.uu.net | 11.12.1991 | 10.12.2025 |
| NL.NET | Key-Systems GmbH | auth101.ns.uu.net auth200.ns.uu.net auth210.ns.uu.net auth51.ns.uu.net auth60.ns.nl.uu.net ns.nl.net | 07.04.1993 | 08.04.2022 |
| VERIZONBUSINESS.COM | MarkMonitor Inc. | auth-ns1.verizonbusiness.com auth-ns2.verizonbusiness.com auth01.ns.uu.net auth200.ns.uu.net auth210.ns.uu.net auth50.ns.uu.net auth61.ns.uu.net | 29.09.2003 | 29.09.2021 |