ABOVENET COMMUNICATIONS
ACI RESEARCH
ADVANCED EQUITIES
AFORE SOLUTIONS
ALLIANCE CAPITAL
ALLIANCEBERNSTEIN
ALLIANZ GLOBAL INVESTOR
ALTRIA
AMERICAN FIBER SYSTEMS
ANNTAYLOR
ANTEL
APAX PARTNERS, LP
ARGUS SYSTEMS CORP
AT&T
AT&T LABS
BEAR STERNS
BELL CANADA
BITDEV
BLOOMBERG
BNY MELLON
BOWEN ADVISORS
BRASIL TELECOM
BRESNAN COMMUNICATIONS
BRIGHT HOUSE NETWORKS
BROADVIEW NETWORKS
BROOKLYN PUBLIC LIBRARY
BT LATAM COLOMBIA
BUCKINGHAM
BWAY.NET
CABLEVISION
CAMALIA
CAPITAL CITIES
CAVALIER TELEPHONE
CCNY
CHINA FC
CIBC WORLD MARKETS
CITIGROUP
CITY OF NEW YORK
CITY TECH
COACH, INC.
COGENT COMMUNICATIONS
COLGATE PALMOLIVE
COLT TELECOM
COMCAST
CONDE NAST PUBLICATIONS
CORE180
CORNERSTONE TELEPHONE
COVAD
COVENANT HOUSE NY
COX BUSINESS
COX COMMUNICATIONS
CREDIT SUISSE
CROWN POINT GROUP
CUNY
D.E.SHAW & CO.
DAIWA SECURITIES AMERICA
DELCO L. CORNETT ASSOCIATES
DELTACOM
DEPARTMENT OF DEFENSE
DEPARTMENT OF EDUCATION CITY OF NEW YORK
DEUTSCHE BANK
DEUTSCHE TELEKOM
DEPARTMENT OF BUILDINGS
DRESDNER KLEINWORT
EGL USA
EMANCIPATION CAPITAL
EMBARQ
EMERGING HEALTH INFORMATION TECH
EMPIRE STATE DEVELOPMENT
EXPORT DEVELOPMENT CANADA
FACTSET
FBR CAPITAL MARKETS
FIBERNET TELECOM GROUP
FIDELITY ACCESS NETWORKS
FIDELITY INVESTMENTS
FIDELITY VOICE AND DATA
FIDESSA
FLAG
FINANCIAL MANAGEMENT REGULATION
FRANCE TELECOM GROUP
FRED ALGER MANAGEMENT
FRIEDMAN, BILLINGS, RAMSEY & CO.
FRONTIER COMMUNICATIONS
GENERAL ELECTRIC SMALLWORLD
GIGASPEED
GLOBAL CAPACITY
GLOBAL CROSSING
GLOBAL DATA COMMUNICATIONS
GENERAL MOTORS CORPORATION
GOLDIN VENTURES
GOLDMAN SACHS
GTA DATA
GVC WINSTAR
HAWAIIAN TELCOM
HIBERNIA ATLANTIC
HSH NORDBANK AG
HYDRO ONE TELECOM
IMTECHTELECOM GLOBAL
INSIGHT COMMUNICATIONS
INSTITUTE FOR DEFENSE ANALYSES
INTEROUTE COMMUNICATIONS
INVESTMENT TECHNOLOGY GROUP
ION TELEVISION
IOWA TELECOM
IPC
IPNETZONE
ITHAKA HARBORS
J. C. NEU AND ASSOCIATES
JEFFERIES & COMPANY
JETBROADBAND
DEFENSE INFORMATION SYSTEMS AGENCY
JOHNSON & JOHNSON
JP MORGAN CHASE
KARTHALA ASSET MANAGEMENT
KDDI AMERICA
KEYSPAN COMMUNICATIONS
KPMG
KPN INTERNATIONAL
LATTANZIO CHEN PARTNERS
LEHMAN BROTHERS
LEVEL 3 COMMUNICATIONS
LEXENT METRO CONNECT
LIGHTNET COMMUNICATIONS
LIGHTOWER FIBER NETWORKS
LOWER EASTSIDE SERVICES CENTER
MASERGY
MCGRAW COMMUNICATIONS
MCLEODUSA
MUNICIPAL CREDIT UNION
MDK ONE ENTERPRISES
MERRILL LYNCH
METCOM NETWORK SERVICES
METRO NET, S.A. DE C.V.
METRO OPTICAL
METTEL
MID ATLANTIC CROSSROADS

MITHRAS CAPITAL
MOORELAND PARTNERS
MORGAN KEEGAN
MORGAN STANLEY
MTA NEW YORK CITY TRANSIT
NATIONAL EXCAHNGE CARRIER ASSOCIATION
NATIXIS CAPITAL MARKETS
NEW COMMUNITY CORPORATION
NEEDHAM
NEON COMMUNICATIONS
NJ TRANSIT
NOMURA
NSIGHT TELSERVICES
NTT AMERICA
NTT COMMUNICATIONS
NYC DEPARTMENT OF CORRECTION
NYC TRANSIT
NYC-HRA-MIS
NYQUIST CAPITAL
NYSE
O`REILLY STRATEGIC COMMUNICATIONS
ONE COMMUNICATIONS
OPTIMUM LIGHTPATH
ORANGE
O'REILLY STRATEGIC COMMUNICATIONS
OSCAR GRUSS & SON
PACIFIC CREST SECURITIES
PACNET
PANGAEA NETWORKS
PARSONS
PASSPORT HEALTH COMMUNICATIONS
PB AMERICAS INC.
PEARSON
PENN TELECOM
PITNEY BOWES
PLATINUM PARTNERS
PORTUGAL TELECOM INOVACAO
PREPA NETWORKS
PRIME CARE MEDICAL GROUP
PRINCETON UNIVERSITY
PROMIGAS TELECOMUNICACIONES
PSEG SERVICES
QWEST COMMUNICATIONS
RAINBOW BROADBAND
RCN
RCN METRO OPTICAL NETWORKS
REDWOOD CAPITAL GROUP
RELIANCE GLOBALCOM
REVOLUTION PARTNERS
ROCKEFELLER GROUP TECHNOLOGY SOLUTIONS
ROBERT DERECTOR ASSOCIATES
ROGERS CABLE COMMUNICATIONS
RUTH ASSET MANAGEMENT
SAIC
SAK DATA
SANFORD BERNSTEIN
SCHERING-PLOUGH
SCHRODER INVESTMENT MANAGEMENT
SCIENTEL AMERICA OF NEW YORK
SHAW CABLESYSTEMS
SIGNAL HILL
SIMLAB.NET
SKY CAPITAL
SOROS.ORG
SPRINT
STANDARD & POORS
STANFORD GROUP
STATE UNIVERSITY OF NEW YORK
STEALTH COMMUNICATIONS
STERLING NATIONAL BANK
STG CAPITAL
STONEBRIDGE HOLDINGS
TATA COMMUNICATIONS
TBR TELECOM
TD NEWCREST
TECHNOLOGY CROSSOVER VENTURES
TELCOM INFORMATION & TECHNOLOGIE
TELEHOUSE AMERICA
TELEHOUSE INTERNATIONAL
TELMEX USA
TELSTRA
TEXAS A&M UNIVERSITY
THALES
THE BANK OF TOKYO-MITSUBISHI
THE LEGAL AID SOCIETY
THE MANNING GROUP
THE MCGRAW HILL COMPANIES
THE MUSEUM OF MODERN ART
THE NEW SCHOOL
THE SAN FRANCISCO STATE UNIVERSITY
THINKEQUITY PARTNERS
THRUPOINT, INC.
TIAA-CREF
TIGEN CAPITAL
TIME INC.
TIME WARNER CABLE
TIME WARNER CABLE BUSINESS CLASS
TIME WARNER TELECOM
T-MOBILE
TNEX
TOUCHDOWN CAPITAL
TRINITY ASSET MANAGEMENT
T-SYSTEMS
UBM
UBS
UNIVERSAL E-BUSINESS SOLUTIONS
UNIVERSITY OF MARYLAND
VANCOUVER SCHOOL BOARD
VERIZON
VERIZON BUSINESS
VERIZON BUSINESS COMMUNICATIONS
VERIZON COMMUNICATIONS
VERIZON CORPORATE MARKETING
VERIZON PARTNER SOLUTIONS
VEROXITY TECHNOLOGY PARTNERS
VIACOM/MTV
VIDEOTRON
VISITING NURSE SERVICE OF NEW YORK
VOCAL IP NETWORX
VOLT
VORNADO REALTY TRUST
VSNL
WARSAW UNIVERSITY, ICM, CORE NET
WASHINGTON METRO TRANSIT AUTHORITY
WAVE 2 WAVE COMMUNICATIONS
WELLS FARGO BANK
WELLSPRING MANAGEMENT
WESLEY CLOVER SOLUTIONS
WHAFH
WHITE & CASE LLP
WILINE NETWORKS
WOHL, FRIED, RITH & KIRCHENBER
WORLD DEVELOPMENT FOUNDATION
XO COMMUNICATIONS
ZAYO BANDWIDTH