134.222.0.0 is a Class B network, so if you do 'whois' on 134.222.0.0 (instead of the individual IP addresses) you find: European Unix Users Group (NET-EUNET-X25) Kruislaan 413 NL-1098 SJ Amsterdam NETHERLANDS Netname: EUNET-X25 Netnumber: 134.222.0.0 Coordinator: EUnet Ltd (EU-NIC) hostmaster@nic.eu.net +31 20 5925109 +31 20 5925165 (24hr Emergency) +31 20 5925163 (fax) Domain System inverse mapping provided by: NS.EU.NET 192.16.202.11 SUNIC.SUNET.SE 192.36.125.2 192.36.148.18 NS.UU.NET 137.39.1.3 NS2.NIC.FR 192.93.0.4 Record last updated on 07-Mar-94. ...what does this do to your traceroute dumps? Richard