[comp.dcom.telecom] 1-800-XXX-0000

cantor@delni.DEC.COM.UUCP (06/04/87)

Ref message subj as above dtd Thu, 21 May 87 10:11 EDT from David Harpe,
<KAJOHN01@ULKYVX.BITNET>:

>Completely by accident, I noticed the other day that if you dial 1-800-XXX-0000
>where XXX is a valid 800 exchange, you get the following message:

>        "You have reached the ATT long distance network.  Thank you for
>         choosing ATT.  This message will not be repeated."

I checked a few codes and found a similar message.   However, 800-444-0000,
in particular, identified itself as the MCI long distance network.  An article
in Telecom Digest 5:156 mentioned that 800 NXX codes are equal access based
and an article in TD 6:3 gave a list of the 800 NXX codes assigned to MCI.

Also, I dialed 800-NXX-0000, where the particular NXX I used is the same as 
the one through which you reach my beeper.  I found that it connects to
a recorder machine, as though it were a regular telephone number.  Using
some other NXX codes for some of my colleagues' beeper numbers, I found
that they seem to be regular beeper numbers.   (No, I didn't actually
send the beep, though.)

It's likely that the beeper exchange numbers I called are not routed
through any long distance carrier, and that New England Telephone allows
NXX-0000 to be used as a regular number.   Perhaps it is just a convention
that both AT&T and MCI follow that 800-NXX-0000 produces the same message
as 700-555-4141.

Oh yes, it apparently doesn't matter what the default long distance carrier
is.  One of my lines is assigned to Sprint and the other to MCI.  I got
the same results using both of these lines.

Dave C.   (David A. Cantor)