AA	American Airlines
AB	Allen-Bradley (part of Rockewell Automation)
AE	American Eagle Outfitters
AF	American Freightways (part of Fedex)
AG	American Greetings
AH	Advanced Healthcare
AJ	Ask Jeeves
AM	Ackerman McQueen
BA	British Airways (formerly Bell Atlantic)
BE	Be, Inc
BH	Butterworth-Heinemann
BI	Behavioural Interventions
BM	Burson-Marsteller
BN	Barnes & Noble
BP	British Petroleum
BR	CentralNic (Brazil)
BT	British Telecom
BW	Brown & Williamson
BX	bx.com
CA	Computer Associates
CE	CE Technologies
CF	Consolidated Freightways
CI	Cognition Corporation
CJ	Commission Junction
CK	Calvin Klein, Inc.
CL	Computer Literacy Inc (Fatbrain, part of Barnes & Noble)
CN	CentralNic (China)
CP	Chicago Pneumatics
CQ	Congressional Quarterly
CS	Compuserve
CT	CTnow.com (Connecticut)
CW	Cable & Wireless
CX	Consulting Exchange
DB	Deutsche Bank
DC	Deloitte Consulting
DE	CentralNic (Germany)
DF	DataFaction
DG	Data General (part of EMC)
DH	Darwin Holdings
DI	Digital Instruments
DJ	Dow Jones
DK	Dorling Kindersley
DN	Verio Inc.
DQ	Dairy Queen
DT	DirectLink Technologies
DV	Digital Video
DW	DiamondWare
EA	Electronic Arts
EB	Encyclopaedia Britannica
EF	EF Education
EI	Economists Incorporated
EM	Essential Markets
EU	CentralNic (European Union)
EY	Ernst & Young
FA	Faradise
FB	American Farm Bureau
FC	Fundamental Consultants
FD	Financial Dynamics
FE	Fabricating Engineers
FF	Forefront
FI	Fisher Investments
FJ	Fulbright & Jaworski
FK	Flack & Kurtz
FM	fm.com
FN	CNNfn
FO	Fundamental Objects
FP	Fischer & Porter Engineering
FR	Fish & Richardson
FS	Fourth Shift
FT	Financial Times
FU	Fu Associates
FX	Bridge Information Systems
GA	General Atomics
GB	CentralNic (Great Britain)
GD	General Dynamics
GE	General Electric
GF	Goebel Fixture Company
GG	gg.com
GI	General Instrument (part of Motorola)
GJ	Graham & James (part of Squire, Sanders & Dempsey)
GT	Grant Thornton
HC	Harper Collins Publishers
HE	Hurrican Electric Internet Services
HF	Hellman & Friedman
HH	Hecker & Harriman (now Hecker Law Group)
HI	Hitachi Software
HK	SARNic (Hong Kong)
HM	Hennes & Mauritz
HP	Hewlett Packard
HQ	HQ Global Workplaces
HR	HR.com
HU	CentralNic (Hungary)
HW	Harvard-Westlake School
HX	HX.com
IB	IB Domains
IC	IC.net
ID	Intrinsic Development
IE	Intelligent Environments
IF	Intelligent Finance
IG	iG Economica
II	Infinite Ink
IK	IK.com
IO	IOCOM
IP	IP.com
IQ	NewWorldIQ
IR	Integrated Research
IV	In-Vision Communications
IW	Internet World
LQ	La Quinta
NO	CentralNic (Norway)
NS	NS.com domain registrars
PA	PA Industries
PB	Pitney Bowes
PC	Intel
PE	Press Enterprise
PF	Pike & Fischer
PG	Procter & Gamble
PH	Politzer & Haney
PM	Philip Morris
PO	Physicians Online
PQ	PQ Corp (fka Philadelphia Quartz)
PR	PR.com
PS	Powerline Systems
PT	Performance Technologies
PV	PacketVideo
PW	PriceWaterhouseCoopers
PX	Paradox Development
PZ	PZ Internet
QC	CentralNic (Quebec)
RA	Rheumatoid Arthiritis (Abbott Laboratories)
RB	Robert Bentley
RC	Robinson & Cole
RD	Reader's Digest
RH	Renkus-Heinz
RK	Hauser-Ross Eye Institute (Radial Keratectomy)
RM	RM plc (fka Research Machines)
RN	RN.com
RQ	RQ Interactive
RR	Road Runner
RU	CentralNic (Russia)
RV	RV.com (Dometic Corp)
RW	Rogers & Wells (part of Clifford Chance)
RX	Rx.com
RY	Radley Yeldar
RZ	Rhizome
SA	CentralNic (Saudi Arabia)
SB	Smithkline Beecham (now GlaxoSmithKline)
SC	Superconnect
SD	Summit Design
SE	CentralNic (Sweden)
SF	Software Factory
SG	Select Group
SH	SH.com
SI	Sports Illustrated
SJ	Springer & Jacoby
SK	SK group
SL	Sherrill-Lubinski
SQ	SoftQuad Software
ST	STMicroelectronics
SV	SiliconValley.com
SW	Schopf & Weiss
SX	SXC Health Solutions
TA	TA Associates
TB	Tomlinson Black
TC	Townshend Computer Tools
TD	TD Bank Financial Group
TI	Texas Instruments
TK	Twin Kings Communications
UK	CentralNic (United Kingdom)
UL	Underwriters Laboratories
UP	Union Pacific
US	CentralNic (United States)
UY	CentralNic (Uraguay)
XB	Expand Beyond
XL	XL.com
XO	XO Communications
YZ	YZ.com
ZA	CentralNic (South Africa)