Notes:
(1) The following information is provided for general reference purposes only and should not be relied upon for a full and complete listing of carrier ARMIS filings. Carriers and others seeking to know carrier ARMIS filing requirements should consult the statute and relevant FCC rules, orders, and other publications.
(2) Discontinuities in filing years may have occurred because the carrier's total revenues fell below the threshold for filing ARMIS data, or as a result of mergers, sales, trades, etc.
(3) ARMIS Report data for companies who have not filed any ARMIS data more recently than the fifth year preceding the current year are not available in the system, i.e., if the last year in which a company filed ARMIS data is 2002 or earlier, then no ARMIS data for that company is in the system.
(4) For more information, see the Corporate History pages for narrative histories of the reporting companies, or the Filing History report to see what ARMIS data is available in the system.

COSA Click on COSA links below for merger history.	Reporting Company or Study Area Name	Periods Filed
		Study Area Level (43-01, 43-03, 43-04)	Operating Company Level (43-02, 43-08)	Mandatory Price Cap (43-05, 43-06, 43-07)	Elective Price Cap (43-05)
PRPR	American Movil / Puerto Rico Telephone Co.		2007 for the 43-08 only
PRSA	Puerto Rico Telephone - Puerto Rico	2007 for the 43-01 only			2007
PRCC	Puerto Rico Communications	2007 for the 43-01 only			2007
AMTR	AT&T/Ameritech Corporation			1991 - 2007
LBIL	Illinois Bell	1990 - 2007	1990 - 2007	1990 - 2007
NBIN	Indiana Bell	1990 - 2007	1990 - 2007	1990 - 2007
MBMI	Michigan Bell	1990 - 2007	1990 - 2007	1990 - 2007
OBOH	Ohio Bell	1990 - 2007	1990 - 2007	1990 - 2007
WTWI	Wisconsin Bell	1990 - 2007	1990 - 2007	1990 - 2007
BSTR	AT&T/BellSouth Corporation		1990 - 2007	1991 - 2007
SBFL	BellSouth - Florida	1990 - 2007		1990 - 2007
SBGA	BellSouth - Georgia	1990 - 2007		1990 - 2007
SBNC	BellSouth - North Carolina	1990 - 2007		1990 - 2007
SBSC	BellSouth - South Carolina	1990 - 2007		1990 - 2007
SCAL	BellSouth - Alabama	1990 - 2007		1990 - 2007
SCKY	BellSouth - Kentucky	1990 - 2007		1990 - 2007
SCLA	BellSouth - Louisiana	1990 - 2007		1990 - 2007
SCMS	BellSouth - Mississippi	1990 - 2007		1990 - 2007
SCTN	BellSouth - Tennessee	1990 - 2007		1990 - 2007
PTTR	AT&T/Pacific Telesis Group			1991 - 2007
PTCA	Pacific Bell - California	1990 - 2007	1990 - 2007	1990 - 2007
PTNV	Nevada Bell	1990 - 2007	1990 - 2007	1990 - 2007
SNCT	AT&T/Southern New England - Connecticut	1990 - 2007	1990 - 2007	1999 - 2007	1991 - 1998
SWTR	AT&T/Southwestern Bell Tel.		1990 - 2007	1991 - 2007
SWAR	Southwestern - Arkansas	1990 - 2007		1990 - 2007
SWKS	Southwestern - Kansas	1990 - 2007		1990 - 2007
SWMO	Southwestern - Missouri	1990 - 2007		1990 - 2007
SWOK	Southwestern - Oklahoma	1990 - 2007		1990 - 2007
SWTX	Southwestern - Texas	1990 - 2007		1990 - 2007
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CNTC	CenturyTel, Inc.				2003 - 2007
CNAL	CenturyTel of Alabama, LLC		2004 - 2007 for 43-08 only
CNAN	CenturyTel of Alabama, LLC - Northern Alabama	2004 - 2007 for 43-01 only			2003 - 2007
CNAS	CenturyTel of Alabama, LLC - Southern Alabama	2004 - 2007 for 43-01 only			2003 - 2007
CNMO	CenturyTel of Missouri, LLC		2005 - 2007 for 43-08 only
CNME	CenturyTel of Missouri, LLC - Belle - Hermann	2005 - 2007 for 43-01 only			2003 - 2007
CNMS	CenturyTel of Missouri, LLC - Southern Missouri	2005 - 2007 for 43-01 only			2003 - 2007
CNMW	CenturyTel of Missouri, LLC - Southwest Missouri	2005 -2007 for 43-01 only			2003 - 2007
CNMC	CenturyTel of Missouri, LLC - Central Missouri	2005 - 2007 for 43-01 only			2003 - 2007
CNWA	CenturyTel - Washington	2002 - 2006 for 43-01 only	2002 - 2006 for 43-08 only
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CBTC	Cincinnati Bell	1990 - 1998	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1994 - 2007
CBOH	Cincinnati Bell - Ohio	1999 - 2007 for the 43-01 1999 - 2000 for the 43-03 and 43-04			1999 - 2007
CBKY	Cincinnati Bell - Kentucky	1999 - 2007 for the 43-01 1999 - 2000 for the 43-03 and 43-04			1999 - 2007
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CTTC	Citizens Communications - Citizens Companies				1997 - 2007
CURA	Citizens Util. Rural Tel. of Arizona/Mohave				1996 - 2007
CTWM	Citizens Tel. of White Mts. - Arizona				1996 - 2007
CTCC	Citizens Telecommunications of California		2005 - 2007 for the 43-08
CUCA	Citizens Telecommunications of California/Shasta	1993 - 1995, 2005 - 2007 for the 43-01 1993 - 1994 for the 43-03 and 43-04	1993 - 1994		1996 - 2007
CTCA	Citizens Tel. of Golden State California/Colusa				1996 - 2007
CTTU	Citizens Tel. of Tuolumne - California				1996 - 2007
CTID	Citizens Tel. of Idaho/McCall				1996 - 2007
CTMT	Citizens Tel. of Montana/Rocky Mountains				1996 - 2007
CTNA	Navajo Comm. - Arizona				1996 - 2007
CTNM	Navajo Comm. - New Mexico				1996 - 2007
CTNU	Navajo Comm. - Utah				1996 - 2007
CTNN	Citizens Tel. of Nevada-North				1997 - 2007
CTNS	Citizens Tel. of Nevada-South				1997 - 2007
CTNY	Citizens Telecom of New York		1994 - 2000 for the 43-02 1994 - 2007 for the 43-08
CTUP	Citizens - Upstate	1999 - 2007 for the 43-01 1994 - 2000 for the 43-03 and 43-04			1997 - 2007
CTRH	Citizens - Red Hook	1999 - 2007 for the 43-01 1994 - 2000 for the 43-03 and 43-04			1997 - 2007
CTWC	Citizens - Western Counties	1994 - 2007 for the 43-01 1994 - 2000 for the 43-03 and 43-04			1997 - 2007
CTOG	Ogden Tel - Pennsylvania				1999 - 2007
CTOR	Citizens Tel. of Oregon				1996 - 2007
CTTN	Citizens Tel. of Tenn/Cookeville	1995 (partial) for the 43-01 only			1996 - 2007
CTVS	Citizens Tel. of Volunteer State - Tennessee				1996 - 2007
CTUT	Citizens Tel. of Utah				1996 - 2007
CTCW	Citizens Tel. WV-Rural	1995 (partial) for the 43-01 only			1997 - 2007
CTGW	Citizens Tel. WV-Urban	1995 (partial) for the 43-01 only			1997 - 2007
CTCR	Crandon Tel. - Wisconsin				1999 - 2007
CTHW	Headwaters Tel. - Wisconsin				1999 - 2007
CTRN	Rhinelander Tel. - Wisconsin				1999 - 2007
CTRL	Rib Lake Tel. - Wisconsin				1999 - 2007
CTMW	Citizens Mountain State Tel. of West Virginia				1996 - 2007
CTLK	Citizens Telecom Co. of Minnesota - Minnesota Lake				2002 - 2007
CTSO	Citizens Telecom Co. of Minnesota - Minnesota South				2002 - 2007
CTFK	Citizens Telecom Co. of Nebraska - Fort Kearney				2002 - 2007
CTND	Citizens Telecom Co. of North Dakota				2002
CTIL	Citizens Telecom Co. of Illinois				2002 - 2007
RTTC	Citizens Communications - Frontier Companies				1992 - 2007
RTNY	Rochester Telephone	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
RTAV	FC of Ausable Valley - New York				1991 - 2007
RTBT	FC of Breezewood - Pennsylvania				1991 - 2007
RTCM	FC of Michigan				1991 - 2007
RTCO	FC of Ohio				1991 - 2007
RTCT	FC of Canton Tel. - Pennsylvania				1991 - 2007
RTET	FC of Pennsylvania				1991 - 2007
RTHT	FC of New York				1991 - 2007
RTIT	FC of Illinois				1991 - 2007
RTLI	FC of Lakeside - Illinois				1991 - 2007
RTLP	FC - Lakewood - Pennsylvania				1991 - 2007
RTMA	FC of Alabama				1991 - 2007
RTMP	FC - Mt. Pulaski - Illinois				1991 - 2007
RTMT	FC - Midland - Illinois				1991 - 2007
RTMW	FC of Mondovi - Wisconsin				1991 - 2007
RTOS	FC - Oswayo River - Pennsylvania				1991 - 2007
RTPT	FC - Prairie - Illinois				1991 - 2007
RTSG	FC of Seneca Gorham Tel. - New York				1991 - 2007
RTSL	FC of Sylvan Lake - New York				1992 - 2007
RTSA	FC of the South - Alabama				1991 - 2007
RTSF	FC of the South - Florida				1991 - 2007
RTSI	FC - Schuyler - Illinois				1991 - 2007
RTTT	FC - Thorntown - Indiana				1991 - 2007
RTUW	FC of Wisconsin - Wisconsin				1991 - 2007
VITC	FC of Minnesota & Iowa				1995 - 2007
RTIL	FC of Orion - Illinois				1996 - 2007
RTGA	FC of Fairmount				1997 - 2007
CWTC	Citizens Communications - Commonwealth Telephone Co. - Pennsylvania	1999 - 2007 for the 43-01 only	1997 - 2000 for the 43-02 1996 - 2007 for the 43-08
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UTTC	Embarq Local Operating Cos. (Formerly sprint LTC)				1991 - 2007
UCFL	Embarq Florida, Inc.	1997 - 2007 for the 43-01 1997 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1997 - 2007 for the 43-08		1997 - 2007
UTNC	Carolina Tel & Tel - North Carolina	1997 - 2007 for the 43-01 1997 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
UTIM	United Telephone - Southeast	1990 - 1998 for the 43-03 only	1991 - 2000 for the 43-02 1991 - 2007 for the 43-08
UTTN	United Telephone - Southeast - Tennessee	1990 - 2007 for the 43-01 1999 - 2000 for the 43-03 1990 - 2000 for the 43-04			1991 - 2007
UTVA	United Telephone - Southeast - Virginia	1990 - 2007 for the 43-01 1999 - 2000 for the 43-03 1990 - 2000 for the 43-04			1991 - 2007
UTKS	United Tel. Co. of South Central Kansas				1991 - 2007
UTMN	Embarq Minnesota				1991 - 2007
UTMO	Embarq Missouri	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
UTNE	United Tel. Co. of the West - Nebraska				1991 - 2007
UTWY	United Tel. Co. of the West - Wyoming				1991 - 2007
CETO	Central Telephone Co.		1993 - 2000 for the 43-02 1991 - 2007 for the 43-08
CENC	Central Telephone Co. - North Carolina	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 1992 for the 43-02 1991 - 1992 for the 43-08		1993 - 2007
CENV	Central Telephone Co. - Nevada	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 1996 for the 43-02 1991 - 1992 for the 43-08		1993 - 2007
UTTX	United Tel. Co. of Texas	1992 - 2007 for the 43-01 1992 - 2000 for the 43-03 and 43-04	1992 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
CETX	Central Tel. Co. of Texas	1998 - 2007 for the 43-01 1998 - 2000 for the 43-03 and 43-04	1998 - 2000 for the 43-02 1998 - 2007 for the 43-08		1993 - 2007
UTNJ	United Tel. Co. of New Jersey	1992 - 2007 for the 43-01 1992 - 2000 for the 43-03 and 43-04	1992 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
UTPA	United Tel. Col. of Pennsylvania	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
UTNW	United Tel of the Northwest		1994 - 2000 for the 43-02 1994 - 2004 for the 43-08
UTOR	United Tel of the Northwest - Oregon	1994 - 2004 for the 43-01 1999 - 2000 for the 43-03 1994 - 2000 for the 43-04			1991 - 2007
UTWA	United Tel of the Northwest - Washington	1994 - 2004 for the 43-01 1999 - 2000 for the 43-03 1994 - 2000 for the 43-04			1991 - 2007
UTSC	United Tel. Co. of the Carolinas - South Carolina				1991 - 2007
CEVA	Central Tel Co. of Virginia	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1993 - 2007
UTOH	United Tel Co. of Ohio	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
UTIN	United Tel Co. of Indiana	1990 - 2007 for the 43-01 1990 - 2000 for the 43-03 and 43-04	1990 - 2000 for the 43-02 1991 - 2007 for the 43-08		1991 - 2007
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HTHI	Hawaiian Telcom Communications	2007 for the 43-01	2007 for the 43-08		2007
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ITTC	Iowa Telecom. Service		2003 - 2007 for 43-08 only		2002 - 2007
ITNO	Iowa Telecom. Service - Iowa North	2003 - 2007 for 43-01 only			2002 - 2007
ITSI	Iowa Telecom. Service - Iowa System	2003 - 2007 for 43-01 only			2002 - 2007
ITIA	Iowa Telecom. Service - Iowa	2003 - 2007 for 43-01 only			2002 - 2007
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QWTR	Qwest Corporation Consolidated			2004 - 2007
USTR	Qwest Corporation		1990 - 2007	1991 - 2003
MSAZ	Qwest - Arizona	1990 - 2007		1990 - 2007
MSCO	Qwest - Colorado	1990 - 2007		1990 - 2007
MSID	Qwest - Idaho South	1990 - 2007		1990 - 2007
MSMT	Qwest - Montana	1990 - 2007		1990 - 2007
MSNM	Qwest - New Mexico	1990 - 2007		1990 - 2007
MSUT	Qwest - Utah	1990 - 2007		1990 - 2007
MSWY	Qwest - Wyoming	1990 - 2007		1990 - 2007
NWIA	Qwest - Iowa	1990 - 2007		1990 - 2007
NWMN	Qwest - Minnesota	1990 - 2007		1990 - 2007
NWNE	Qwest - Nebraska	1990 - 2007		1990 - 2007
NWND	Qwest - North Dakota	1990 - 2007		1990 - 2007
NWSD	Qwest - South Dakota	1990 - 2007		1990 - 2007
PNID	Qwest - Idaho North	1990 - 2007		1990 - 2007
PNOR	Qwest - Oregon	1990 - 2007		1990 - 2007
PNWA	Qwest - Washington	1990 - 2007		1990 - 2007
MHOR	Malheur Home Telephone Company - Oregon			2004 - 2007
EPCO	El Paso County Telephone Company - Colorado			2004 - 2007
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RVCA	SureWest Telephone	2002 - 2006 for 43-01 only	2002 - 2006 for 43-08 only
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BNTR	Verizon Bell Atlantic Corporation			1997 - 2007
CDDC	Verizon Washington D.C.	1990 - 2007	1990 - 2007	1990 - 2007
CMMD	Verizon Maryland	1990 - 2007	1990 - 2007	1990 - 2007
CVVA	Verizon Virginia	1990 - 2007	1990 - 2007	1990 - 2007
CWWV	Verizon West Virginia	1990 - 2007	1990 - 2007	1990 - 2007
DSDE	Verizon Delaware	1990 - 2007	1990 - 2007	1990 - 2007
PAPA	Verizon Pennsylvania	1990 - 2007	1990 - 2007	1990 - 2007
NJNJ	Verizon New Jersey	1990 - 2007	1990 - 2007	1990 - 2007
NETC	Verizon New England		1991 - 2007	1991 - 1996 for 43-07 only
NEME	Verizon New England - Maine	1990 - 2007		1990 - 2007
NEMA	Verizon New England - Massachusetts	1990 - 2007		1990 - 2007
NENH	Verizon New England - New Hampshire	1990 - 2007		1990 - 2007
NERI	Verizon New England - Rhode Island	1990 - 2007		1990 - 2007
NEVT	Verizon New England - Vermont	1990 - 2007		1990 - 2007
NYNY	Verizon New York Telephone	1990 - 2007	1990 - 2007	1990 - 2007
GTTC	Verizon GTE			1991 - 2007
GTGC	Verizon California		1996 - 2007
GTCA	GTE/California	1990 - 2007	1990 - 1995	1990 - 2007
COAZ	Contel/Arizona	1992 - 2007		1990 - 2007
COCA	Contel/California	1990 - 2007		1990 - 2007
CONV	Contel/Nevada	1992 - 2007		1990 - 2007
GTFL	Verizon Florida	1990 - 2007	1990 - 2007	1990 - 2007
GTHI	Verizon Hawaii	1990 - 2004	1990 - 2004	1990 - 2004
GTMC	Verizon Micronesian			1995 - 2004
GTMD	GTE Midwest d/b/a Verizon Midwest		1993 - 2001
GTMO	Verizon MD - Missouri	1990 - 2001		1990 - 2001
COMO	Verizon MD - Contel/Missouri	1990 - 2001	1990 - 1992	1990 - 2001
COCM	Verizon MD - Contel Systems of Missouri	1993 - 2001		1993 - 2001
COEM	Verizon MD - Contel of Eastern Missouri	1993 - 2001		1993 - 2001
GTMW	Verizon North		1990 - 2007
GTIL	Verizon NO - Illinois	1990 - 2007		1990 - 2007
GTIN	Verizon NO - Indiana	1990 - 2007		1990 - 2007
GTMI	Verizon NO - Michigan	1990 - 2007		1990 - 2007
GTOH	Verizon NO - Ohio	1990 - 2007		1990 - 2007
GTPA	Verizon NO - Pennsylvania	1990 - 2007		1990 - 2007
GTWI	Verizon NO - Wisconsin	1990 - 2007		1990 - 2007
GTGO	Verizon NO - General Offices	1990 - 2007 for 43-01 and 43-03 only
COPA	Verizon NO - Contel/Pennsylvania	1993 - 2007		1990 - 2007
COQS	Verizon NO - Contel/Quaker State	1993 - 2007		1993 - 2007
COIN	Verizon NO - Contel/Indiana	1991 - 2007		1990 - 2007
COIL	Verizon NO - Contel/Illinois	1990 - 2007		1990 - 2007
GTNW	Verizon Northwest		1991 - 2007
GTID	Verizon NW - Idaho	1990 - 2007		1990 - 2007
GTOR	Verizon NW - Oregon	1990 - 2007		1990 - 2007
GTWA	Verizon NW - Washington	1990 - 2007		1990 - 2007
GNCA	Verizon NW - West Coast California	1990 - 2007		1990 - 2007
COWA	Verizon NW - Contel/Washington	1993 - 2007		1990 - 2007
GTSO	Verizon South		1991 - 2007
GTAL	Verizon SO - Alabama	1990 - 2001		1990 - 2001
GTKY	Verizon SO - Kentucky	1990 - 2001		1990 - 2001
GTNC	Verizon SO - North Carolina	1990 - 2007		1990 - 2007
GTSC	Verizon SO - South Carolina	1990 - 2007		1990 - 2007
GTVA	Verizon SO - Virginia	1990 - 2007		1990 - 2007
GLIL	Verizon SO - Illinois	1993 - 2007		1994 - 2007
COKY	Verizon SO - Contel/Kentucky	1994 - 2001		1990 - 2001
CONC	Verizon SO - Contel/North Carolina	1994 - 2007		1990 - 2007
COSC	Verizon SO - Contel/South Carolina	1994 - 2007		1990 - 2007
COVA	Verizon SO - Contel/Virginia	1990 - 2007		1990 - 2007
GTSW	GTE Southwest dba Verizon Southwest		1991 - 2007
GTTX	Verizon SW - Texas	1990 - 2007		1990 - 2007
COTX	Verizon SW - Contel/Texas	1990 - 2007	1990 - 1994	1990 - 2007