[comp.dcom.telecom] US/Canada Only One-Digit Code?

David Tamkin <dattier@ddsw1.mcs.com> (06/07/90)

Steve Pershing wrote in volume 10, issue 411:

|I thought that the USSR was assigned country code 7 which is also a
|single digit code.  There may be others.

There aren't: 1 and 7 are the only single-digit codes.

|In addition, there was at one time, an area code within country code 1
|assigned to Mexico City, for more convenient dialling (?).  This is an
|anomaly in the normal CCITT assignment, as Mexico has its own country code.

Right.  905 is a pseudo-area code for Mexico's Area 5 and 706 is a
pseudo-area code for Mexico's Area 6.  Note that they end in the right
digit; originally 706 was area code 903, but it was changed to 706 so
as to end in 6.  Come 1995 if not sooner, these two area codes will be
disconnected from Mexico to be re-used in the United States or Canada.
903, of course, has already been reassigned for the part of 214 away
from metropolitan Dallas.

One of TELECOM Digest's shyer readers has told me that when the NANP
expands to NXX area codes, area codes 521 through 529 will be reserved
for dialing shortcuts to areas 1-9 in Mexico respectively.  Mexico's
country code is 52, so this will make it possible to dial Mexico from
the United States with 1 (instead of 011) + 52 + area + number.  He
didn't say whether that will work from Canada or the Caribbean.

|I wonder if there are other "convenience" codes within other country
|codes in other parts of the world?

The dialing shortcuts between the UK and Ireland (in both directions)
have been discussed in the Digest recently.  I imagine that there are
yet more examples across the globe, but I guess that actually sharing
the country code with neighbors as we do in North America is as far as
international dialing shortcuts can go.


David Tamkin  Box 7002  Des Plaines IL  60018-7002  708 518 6769  312 693 0591
MCI Mail: 426-1818  GEnie: D.W.TAMKIN  CIS: 73720,1570   dattier@ddsw1.mcs.com