VIA NET.WORKS, Inc. today announced that it has completed its acquisition of the continental European operations of PSINet Europe BV.

As a result of the transaction, first announced on 9 August 2004, VIA has acquired PSINet operations in Belgium, France, Germany, the Netherlands and Switzerland. The five operations provide managed hosting, managed networks and monitored access services to more than 4,000 customers on mainland Europe.

With the acquisition the combined VIA group has revenues of more than $110 million with a revenue mix of approximately 30% hosting, 55% access and 15% other managed services, such as VPNs and security.

About VIA NET.WORKS, Inc.
VIA NET.WORKS, Inc. (Nasdaq: VNWI; Euronext) is a leading provider of business communication solutions to more than 200,000 small- and medium-sized businesses in Europe and the United States. Through the VIA, AMEN and PSINet Europe brands, the Group offers a comprehensive portfolio of business communications services, including hosting, security, connectivity, networks, voice and professional services. Website: <a href="http://www.vianetworks.com/">http://www.vianetworks.com/</a>

Contact:
Investors:
Mike Geczi,
+1-212-994-9813,
<a href="mailto:mgeczi@apcoworldwide.com">mgeczi@apcoworldwide.com</a>,
for VIA NET.WORKS, Inc.;
or Media:
Piers Schreiber
of VIA NET.WORKS, Inc.,
+31-20-502-0026,
Cell: +31-65-535-8087,
or <a href="mailtoschreiber@vianetworks.com">pschreiber@vianetworks.com</a>

Web site: <a href="http://www.vianetworks.com/">http://www.vianetworks.com/</a>

<i>Source: VIA NET.WORKS, Inc.</i>