AGT Mobility
http://www.telus.com

Airtouch
http://www.airtouch.com/

AllTel
http://www.alltel.com/

Ameritech Cellular
http://www.ameritech.com/

Amteva
http://www.amteva.com/

ASCI
http://www.acsi.net

AT&T
http://www.att.com/easyreach500/

BC Tel
http://www.bctel.com/

BC Tel Mobility
http://www.bctm.com/

Bell Atlantic
http://www.banm.com/

Bell Canada
http://www.bell.ca/

Bell Mobility
http://www.bellmobility.com/

Bell South
http://www.bscc.com/

BT
http://www.onenumber.bt.com/

Cable & Wireless
http://www.cwplc.com/

Cantel
http://www.cantel.com

Cellcom
http://www.cellcom.com

Cellnet
http://www.cellnet.co.uk

Clearman
http://www.clearman.com/phone/

Comcast
http://www.comcast.com/

Deutsche Telecom
http://www.DTAG.DE/english/index.htm

Diamond Cable
http://www.diamond.co.uk/

Dovecote
http://www.dovecote.co.uk/

En Tel
http://www.entelchile.net/entelpho/avanzada.htm#2

FlexTel
http://www.flextel.co.uk/

France Telecom
http://www.francetelecom.com/

Telecom Finland
http://www.tfi.net/

Global Media
http://www.globalmedia.co.uk/

Hong Kong Telecom
http://www.hkt.com/

Hutchison Telecom
http://www.hutchnet.com.hk/

Hyosung Telecom

Italitel
http://www.italtel.it/

Manitoba Telephone
http://www.mts.mb.ca/

MCI
http://www.mci.com/

Mercury
http://www.mercury.co.uk/

Netcom GSM
http://www.netcom.no/

Norweb
http://www.norwebcomms.com/

NTT
http://www.ntt.co.jp/

Octel
http://www.octel.com/

Pacific Bell
http://www.pacbell.com/

Portugal Telecom
http://www.telecom.pt/welcome_uk.htm

Primex
http://www.primex.co.uk/ptn/index.htm

PTT
http://www.ptt-telecom.nl/

Redstone
http://www.redstone.co.uk/

Saritel
http://www.saritel.it/

SaskTel
http://www.sasktel.com/

Scottish Telecom
http://www.scottishtelecom.com

Singapore Telecom
http://www.singtel.com/

SkyTel
http://www.skytel.com/

SNET Cellular
http://www.snet.com/

South Western Bell
http://www.sbc.com/

Sprint
http://www.sprint.com/

Swiss Telecom
http://www.swisscom.ch/

Telecom Argentina
http://www.telecom.com.ar/

TeleDenmark
http://www.teledanmark.dk/

Telefonica
http://www.telefonica.com.ar/

Telenor
http://www.telenor.no

Telia
http://www.telia.se/

Telstra
http://www.telstra.com.au/

The Personal Number Company
http://www.personal-number.co.uk/

Torch
http://www.torch.co.uk/

Traders
http://www.traders.co.uk/communications/pna/market.htm

US West
http://www.uswest.com/

Vodafone
http://www.vodafone.co.uk/

Zero Seven Thousand
http://www.atlantica.co.uk/profess/zero7000.html