[comp.dcom.telecom] 800 Service

scotts@bu-it.BU.EDU (01/03/89)

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[Moderator's Note: This special issue of the Digest has been produced
from information provided by Scott Statton, and discusses how prefixes
in 'area code 800' are assigned, and the telcos associated with each.

DON'T FORGET that system 'xx.lcs.mit.edu' is no longer available to us.
If you mail to us there, we do NOT get the mail any longer. Use only
the bu-cs.bu.edu address.    P. Townson]
{{{									}}}
{{{ And on to the message...					-chip	}}}

     As some readers of this list may not know, under Equal Access,
any long-distance company can carry 1-800 traffic.  Which carrier gets
the call is determined (at the moment) by the NNX of the number.  I.E.
1-800-528-1234 (The nation-wide number for making reservations at a
Best Western Motel) is carried by AT&T.  While 1-800-888-1800 is
carried by MCI.

    The carrier must have Feature Group D presence for originating
calls from the originating exchange (either direct, or through an
access tandem).

     In the future, when CCIS becomes wide-spread, a query will be
made in the database [Who gets 1-800-985-1234?] and the call will be
routed appropriately.  To clarify:  Now the carrier is determined by
the NNX.  In the future, the carrier will be determined by the entire
7 digits.

     A similar situation exists with 900 service.  Each carrier can
reserve NXX-s from BellCore (the people who among a zillion other
tasks are in charge of handing out prefixes and area codes).  They're
not cheap!  To get the actual number is free (there are qualifications
that I don't deal with), but to get it 'turned on' in a LATA costs you
money, depending on (1) How many prefixes you're getting, (2) whether
it's 800 or 900 service, (3) How many Tandems/End Offices are in the
LATA.  It requires a discrete amount of labor for EACH office, because
EACH routing table must be modified.

     Of the 800 possible NXX-s, 409 are currently assigned.  A
long-distance carrier can get one 800 and four 900 numbers just for
the paperwork.  But to get more than that, you have to show that
you're 70% full now, and demonstrate a real need for the capacity.

     I have included the entire 800-NXX to long-distance carrier
translation table.  Note that not every NXX is valid in every area.

Revised 800/OCN Translation Table
Effective 10 October 1988

221 ATX		222 ATX		223 ATX		224 LDL		225 ATX
226 MIC		227 ATX		228 ATX		229 TDX		230 NTK
231 ATX		232 ATX		233 ATX		234 MCI		235 ATX
236 SCH		237 ATX		238 ATX		239 DLT		240 SIR
241 ATX		242 ATX		243 ATX		244 ---		245 ATX
246 ---		247 ATX		248 ATX		249 ---		250 ---
251 ATX		252 ATX		253 ATX		254 TTU		255 ATX
256 LSI		257 ATX		258 ATX		259 ---		260 ---
261 SCH		262 ATX		263 CAN		264 ICT		265 CAN
266 CSY		267 CAN		268 CAN		269 FDG		270 ---
271 ---		272 ATX		273 ---		274 MCI		275 ITT
276 ONE		277 SNT		278 ---		279 MAL		280 ADG
281 ---		282 ATX		283 MCI		284 MCI		285 ---
286 ---		287 ---		288 MCI		289 MCI		290 ---
291 ---		292 ATX		293 PRO		294 ---		295 ---
296 ---		297 ARE		298 ---		299 CYT

321 ATX		322 ATX		323 ATX		324 HNI		325 ATX
326 UTC		327 ATX		328 ATX		329 TET		330 TET
331 ATX		332 ATX		333 MCI		334 ATX		335 SCH
336 ATX		337 FST		338 ATX		339 ---		340 ---
341 ATX		342 ATX		343 ATX		344 ATX		345 ATX
346 ATX		347 UTC		348 ATX		349 DCT		350 CSY
351 ATX		352 ATX		353 ---		354 ---		355 ---
356 ATX		357 ---		358 ATX		359 UTC		360 ---
361 CAN		362 ATX		363 CAN		364 HNI		365 MCI
366 UTC		367 ATX		368 ATX		369 TDD		370 TDD
371 ---		372 ATX		373 TDD		374 ---		375 TNO
376 ---		377 GTS		378 ---		379 ---		380 ---
381 ---		382 ATX		383 TDD		384 FDT		385 CAB
386 TBQ		387 CAN		388 ---		389 ---		390 ---
391 ---		392 ATX		393 EXF		394 ---		395 ---
396 ---		397 TDD		398 ---		399 ARZ

421 ATX		422 ATX		423 ATX		424 ATX		425 TTH
426 ATX		427 ---		428 ATX		429 ---		430 ---
431 ATX		432 ATX		433 ATX		434 AGN		435 ATX
436 IDN		437 ATX		438 ATX		439 ---		440 TXN
441 ATX		442 ATX		443 ATX		444 MCI		445 ATX
446 ATX		447 ATX		448 ATX		449 ---		450 USL
451 ATX		452 ATX		453 ATX		454 ALN		455 ---
456 MCI		457 ATX		458 ATX		459 ---		460 ---
461 CAN		462 ATX		463 CAN		464 --		465 CAN
466 ALN		467 ICT		468 ATX		469 ---		470 ---
471 ALN		472 ATX		473 ---		474 ---		475 TDD
476 TDD		477 ---		478 AAM		479 ---		480 ---
481 ---		482 ATX		483 ---		484 TDD		485 TDD
486 TDX		487 ---		488 ---		489 TOM		490 ---
491 ---		492 ATX		493 ---		494 ---		495 ---
496 ---		497 ---		498 ---		499 ---

521 ATX		522 ATX		523 ATX		524 ATX		525 ATX
526 ATX		527 ATX		528 ATX		529 MIT		530 ---
531 ATX		532 ATX		533 ATX		534 ---		535 ATX
536 ALN		537 ATX		538 ATX		539 ---		540 ---
541 ATX		542 ATX		543 ATX		544 ATX		545 ATX
546 UTC		547 ATX		548 ATX		549 ---		550 CMA
551 ATX		552 ATX		553 ATX		554 ATX		555 ATX
556 ATX		557 ALN		558 ATX		559 ---		560 ---
561 CAN		562 ATX		563 CAN		564 ---		565 CAN
566 ALN		567 CAN		568 ---		569 ---		570 ---
571 ---		572 ATX		573 ---		574 AMM		575 ---
576 ---		577 GTS		578 ---		579 LNS		580 WES
581 ---		582 ATX		583 TDD		584 TDD		585 ---
586 ATC		587 LTQ		588 ATC		589 LGT		590 ---
591 ---		592 ATX		593 TDD		594 TDD		595 ---
596 ---		597 ---		598 ---		599 ---

621 ATX		622 ATX		623 ---		624 ATX		625 NLD
626 ATX		627 MCI		628 ATX		629 ---		630 ---
631 ATX		632 ATX		633 ATX		634 ATX		635 ATX
636 CQU		637 ATX		638 ATX		639 BUR		640 ---
641 ATX		642 ATX		643 ATX		644 CMA		645 ATX
646 ---		647 ATX		648 ATX		649 ---		650 ---
651 ---		652 ATX		653 ---		654 ATX		655 ---
656 ---		657 TDD		658 TDD		659 ---		660 ---
661 CAN		662 ATX		663 CAN		664 UTC		665 CAN
666 MCI		667 CAN		668 CAN		669 UTC		670 ---
671 ---		672 ATX		673 TDD		674 TDD		675 ---
676 ---		677 ---		678 MCI		679 ---		680 ---
681 ---		682 ATX		683 MTD		684 ---		685 ---
686 LGT		687 NTS		688 ---		689 ---		690 ---
691 ---		692 ATX		693 ---		694 ---		695 ---
696 ---		697 ---		698 NYC		699 PLG

720 TGN
721 ---		722 ATX		723 ---		724 RTC		725 SAN
726 UTC		727 MCI		728 TDD		729 UTC		730 ---
731 ---		732 ATX		733 UTC		734 ---		735 UTC
736 UTC		737 MEC		738 MEC		739 ---		740 ---
741 MIC		742 ATX		743 EDS		744 ---		745 ---
746 ---		747 TDD		748 TDD		749 TDD		750 ---
751 ---		752 ATX		753 ---		754 TSH		755 ---
756 ---		757 TID		758 ---		759 MCI		760 ---
761 ---		762 ATX		763 ---		764 AAM		765 ---
766 ---		767 UTC		768 SNT		769 ---		770 GCN
771 SNT		772 ATX		773 CUX		774 ---		775 ---
776 UTC		777 MCI		778 UTC		779 TDD		780 TDD
781 ---		782 ATX		783 ALN		784 ALG		785 SNH
786 *1		787 ---		788 ---		789 TMU		790 ---
791 ---		792 ATX		793 ---		794 ---		795 ---
796 ---		797 TID		798 TDD		799 --

821 ATX		822 ATX		823 THA		824 ATX		825 MCI
826 ATX		827 UTC		828 ATX		829 UTC		830 ---
831 ATX		832 ATX		833 ATX		834 ---		835 ATX
836 TDD		837 TDD		838 ---		839 VST		840 ---
841 ATX		842 ATX		843 ATX		844 LDD		845 ATX
846 ---		847 ATX		848 ATX		849 ---		850 TKC
851 ATX		852 ATX		853 ---		854 ATX		855 ATX
856 ---		857 TLS		858 ATX		859 ---		860 ---
861 ---		862 ATX		863 ALN		864 TEN		865 ---
866 ---		867 ---		868 SNT		869 UTC		870 ---
871 ---		872 ATX		873 MCI		874 ATX		875 ALN
876 MCI		877 UTC		878 ALN		879 ---		880 NAS
881 NAS		882 ATX		883 ---		884 ---		885 ATX
886 ALN		887 ETS		888 MCI		889 ---		890 ---
891 ---		892 ATX		893 ---		894 ---		895 ---
896 TXN		897 ---		898 CGI		899 TDX

921 ---		922 ATX		923 ALN		924 ---		925 ---
926 ---		927 ---		928 CIS		929 ---		930 ---
931 ---		932 ATX		933 ---		934 ---		935 ---
936 RBW		937 MCI		938 ---		939 ---		940 TSF
941 ---		942 ATX		943 ---		944 ---		945 ---
946 ---		947 ---		948 ---		949 ---		950 MCI
951 BML		952 ATX		953 ---		954 ---		955 MCI
956 ---		957 ---		958 *2		959 *2		960 CNO
961 ---		962 ATX		963 SOC		964 ---		965 ---
966 TDX		967 ---		968 TED		969 TDX		970 ---
971 ---		972 ATX		973 ---		974 ---		975 ---
976 ---		977 ---		978 ---		979 ---		980 ---
981 ---		982 ATX		983 WUT		984 ---		985 ---
986 WUT		987 ---		988 WUT		989 TDX		990 ---
991 ---		992 ATX		993 ---		994 ---		995 ---
996 VOA		997 ---		998 ---		999 MCI

NOTES:
*1 -- RELEASED FOR FUTURE ASSIGNMENT
*2 -- These NXX codes are generally reserved for test applications; They
      may be reserved for Acess Tandem testing from an End Office.

Note also:  The following NXX are dedicated for RCCP (Radio Common Carrier
Paging) under the discretion of the local exchange carrier:

202, 212, 302, 312, 402, 412, 502, 512, 602, 612, 702, 712, 802, 812, 902,
and 912.

OCN Reference List:

ADG - Advantage Network, Inc.		AGN - AMRIGON
ALG - Allnet Communication Services     AMM - Access Long Distance
AAM - ALASCOM				ARE - American Express TRS
ARZ - AmeriCall Corporation (Calif.)	ATC - Action Telecom Co.
ATX - AT&T				BML - Phone America
BUR - Burlington Tel.  			CAB - Hedges Communications
CAN - Telcom Canada			CNO - COMTEL of New Orleans
CQU - ConQuest Comm. Corp		CSY - COM Systems
CUX - Compu-Tel Inc. 			CYT - ClayDesta Communications
DCT - Direct Communications, Inc.	DLT - Delta Communications, Inc.
EDS - Electronic Data Systems Corp. 	ETS - Eastern Telephone Systems, Inc.
EXF - Execulines of Florida, Inc.	FDG - First Digital Network
FDN - Florida Digital Network		FDT - Friend Technologies
FST - First Data Resources		GCN - General Communications, Inc.
GTS - Telenet Comm. Corp.		HNI - Houston Network, Inc.
ITT - United States Transmission System	LDD - LDDS-II, Inc.
LDL - Long Distance for Less		LGT - LITEL
LNS - Lintel Systems			LSI - Long Distance Savers
LTQ - Long Distance for Less 		MAL - MIDAMERICAN
MCI - MCI Telecommunications Corp.	MDE - Meade Associates
MEC - Mercury, Inc.			MIC - Microtel, Inc.
MIT - Midco Communications		MTD - Metromedia Long Distance
NLD - National Data Corp.		NTK - Network Telemanagement Svcs.
NTS - NTS Communications		ONC - OMNICALL, Inc.
ONE - One Call Communications, Inc.	PHE - Phone Mail, Inc.
PLG - Pilgrim Telephone Co.		PRO - PROTO-COL
RBW - R-Comm				RTC - RCI Corporation
SAN - Satelco				SCH - Schneider Communications
SDY - TELVUE Corp.			SIR - Southern Interexchange Services
SLS - Southland Systems, Inc.		SNH - Sunshine Telephone Co.
SNT - SouthernNet, Inc.			SOC - State of California
TBQ - Telecable Corp.			TDD - Teleconnect
TDX - Cable & Wireless Comm.		TED - TeleDial America
TEM - Telesystems, Inc.			TEN - Telesphere Network, Inc.
TET - Teltec Savings Communications Co.	TGN - Telemanagement Consult't Corp.
THA - Touch America			TID - TMC South Central Indiana
TKC - TK Communications, Inc.		TLS - TELE-SAV
TMU - Tel-America, Inc.			TNO - ATC Cignal Communications
TOM - TMC of Montgomery			TOR - TMC of Orlando
TSF - SOUTH-TEL				TSH - Tel-Share
TTH - Tele Tech, Inc.			TTU - Total-Tel USA
TXN - Tex-Net				USL - U.S. Link Long Distance
UTC - U.S. Telcom, Inc. (U.S. Sprint)	VOA - Valu-Line
VST - STAR-LINE				WES - Westel
WUT - Western Union Telegraph Co.

NOTE: Where local telcos, such as Illinois Bell offer 800 service, they
purchase blocks of numbers from AT&T on prefixes assigned to AT&T. They
are free to purhcase blocks of numbers from any carrier of their choice
however.