The following list comes from the Listserv General Users Guide with some
corrections and comments by me

Max Potter
U3A Witney

HTH

This list is sorted by country code, not by country. Please note that
country codes do not always correspond to a person's physical location;
for instance, a German CompuServe user would be counted as a USA user
simply because his or her address ends with .COM; there are several
Canadian universities with .EDU suffixes; and so forth.

(ac appears to be UK academic, eg universities)

com     USA (Company)
edu     USA (Education)
gov     USA (Government)
mil     USA (Military)
net     USA (Network)
org     USA (Organization)

ad      Andorra
ae      United Arab Emirates
af      Afghanistan
ag      Antigua and Barbuda
ai      Anguilla
al      Albania
am      Armenia
an      Netherlands Antilles
ao      Angola
aq      Antarctica
ar      Argentina
as      American Samoa
at      Austria
au      Australia
aw      Aruba (ex part of Netherlands Antilles)
az      Azerbaijan

ba      Bosnia and Herzegovina
bb      Barbados
bd      Bangladesh
be      Belgium
bf      Burkina Faso
bh      Bahrain
bh      Bulgaria
bi      Burundi
bj      Benin
bm      Bermuda
bn      Brunei Darussalam (Brunei)
bo      Bolivia
br      Brazil
bs      Bahamas
bt      Bhutan
bv      Bouvet Island (S Atlantic)
bw      Botswana
by      Belarus
bz      Belize

ca      Canada
cc      Cocos (Keeling) Islands
cf      Central African Republic
cg      Congo
ch      Switzerland
ci      Ivory Coast (Cote d’Ivoire)
ck      Cook Islands
cl      Chile
cm      Cameroon
cn      China
co      Columbia
cr      Costa Rica
cu      Cuba
cv      Cape Verde
cx      Christmas Island
cy      Cyprus
cz      Czech Republic

de      Germany
dj      Djibouti
dk      Denmark
dm      Dominica
do      Dominican Republic
dz      Algeria

ec      Ecuador
ee      Estonia
eg      Egypt
eh      Western Sahara
er      Eritrea
es      Spain
et      Ethiopia

fi      Finland
fj      Fiji
fk      Falkland Islands
fm      Micronesia
fo      Faroe Islands
fr      France

ga      Gabon
gb      United Kingdom (more usually UK)
gd      Grenada
ge      Georgia
gf      French Guiana
gh      Ghana
gi      Gibraltar
gl      Greenland
gm      Gambia
gn      Guinea
gp      Guadeloupe
gq      Equatorial Guinea
gr      Greece
gs      South Georgia
gt      Guatemala
gu      Guam
gw      Guinea-Bissau
gy      Guyana

hk      Hong Kong
hm      Heard and McDonald Islands (S Indian Ocean)
hn      Honduras
hr      Croatia (Hrvatska)
ht      Haiti
hu      Hungary

id      Indonesia
ie      Ireland
il      Israel
in      India
io      British Indian Ocean Territory
iq      Iraq
ir      Iran
is      Iceland
it      Italy

jm      Jamaica
jo      Jordan
jp      Japan

ke      Kenya
kg      Kyrgyzstan
kh      Cambodia
ki      Kiribati (Gilbert Is)
km      Comoros
kn      Saint Kitts and Nevis
kp      Democratic People’s Republic of Korea (North Korea)
kr      Republic of Korea (South Korea)
kw      Kuwait
ky      Cayman Islands
kz      Kazakhstan

la      Lao Democratic Republic
lb      Lebanon
lc      Saint Lucia
li      Liechtenstein
lk      Sri Lanka
lr      Liberia
ls      Lesotho
lt      Lithuania
lu      Luxembourg
lv      Latvia
ly      Libya

ma      Morocco
mc      Monaco
md      Moldova
mg      Madagascar
mh      Marshall Islands
mk      Macedonia
ml      Mali
mm      Myanmar (Burma)
mn      Mongolia
mo      Macau
mp      Northern Mariana Islands (W Pacific)
mq      Martinique
mr      Mauritania
ms      Montserrat
mt      Malta
mu      Mauritius
mv      Maldives
mw      Malawi
mx      Mexico
my      Malaysia
mz      Mozambique

na      Namibia
nc      New Caledonia
ne      Niger
nf      Norfolk Island
ng      Nigeria
ni      Nicaragua
nl      Netherlands
no      Norway
np      Nepal
nr      Nauru (W C Pacific)
nu      Niue (S Pacific)
nz      New Zealand

om      Oman

pa      Panama
pe      Peru
pf      French Polynesia
pg      Papua New Guinea
ph      Philippines
pk      Pakistan
pl      Poland
pm      St. Pierre and Miquelon
pn      Pitcairn
pr      Puerto Rico
pt      Portugal
pw      Palau (Belau) (W Pacific)
py      Paraguay

qa      Qatar

re      Reunion
ro      Romania
ru      Russian Federation
rw      Rwanda

sa      Saudi Arabia
sb      Solomon Islands
sc      Seychelles
sd      Sudan
se      Sweden
sg      Singapore
sh      St. Helena
si      Sierra Leone
si      Slovenia
sj      Svalbard and Jan Mayen Islands (inc Spitzbergen)
sk      Slovakia
sm      San Marino
sn      Senegal
so      Somalia
sr      Suriname
st      Sao tome and Principe
sv      El Salvador
sy      Syria
sz      Swaziland

tc      Turks and Caicos Islands
td      Chad
tf      French Southern Territories
tg      Togo
th      Thailand
tj      Tajikistan
tk      Tokelau (S Pacific)
tm      Turkmenistan
tn      Tunisia
to      Tonga
tp      East Timor
tr      Turkey
tt      Trinidad and Tobago
tv      Tuvalu (Ellice Is)
tw      Taiwan
tz      Tanzania

ua      Ukraine
ug      Uganda
uk      United Kingdom
us      United States of America
uy      Uruguay
uz      Uzbekistan

va      Vatican City
vc      Saint Vincent and the Grenadines
ve      Venezuela
vg      British Virgin Islands
vi      US Virgin Islands
vn      Vietnam
vu      Vanuatu (New Hebrides)

wf      Wallis and Futuna Islands (C Pacific)
ws      Samoa

ye      Yemen
yt      Mayotte (nr Comoros)
yu      Yugoslavia

za      South Africa
zm      Zambia
zr      Zaire
zw      Zimbabwe

--
I grow old ever learning new things - Solon c640-558BC (and how!)