| AEP | AEPIN | | Indiana | Allen, Blackford, Dearborn, Delaware, Elkhart, Franklin, Grant, Hamilton, Jefferson, Jennings, Madison, Noble, Ohio, Randolph, Ripley, Switzerland, Tipton, Wells |
| AES Indiana | AESIND | AT&T Non-Participating Code for AES Indiana
Marion, Boone, Hamilton, Hancock, Hendricks, Johnson, Morgan, Owen, Putnam, and Shelby | Indiana | Boone, Hamilton, Hancock, Hendricks, Johnson, Marion, Morgan, Owen, Putnam, Shelby |
| Altafiber | ALTA | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Anderson Municipal Light and Power | NPAMLP | AT&T Non-Participating Code for Anderson Municipal Light and Power
Madison | Indiana | Madison |
| AT&T Indiana | ATTIN | All of Indiana | Indiana | Adams, Allen, Bartholomew, Benton, Blackford, Boone, Brown, Carroll, Cass, Clark, Clay, Clinton, Crawford, Daviess, De Kalb, Dearborn, Decatur, Delaware, Dubois, Elkhart, Fayette, Floyd, Fountain, Franklin, Fulton, Gibson, Grant, Greene, Hamilton, Hancock, Harrison, Hendricks, Henry, Howard, Huntington, Jackson, Jasper, Jay, Jefferson, Jennings, Johnson, Knox, Kosciusko, Lagrange, Lake, LaPorte, Lawrence, Madison, Marion, Marshall, Martin, Miami, Monroe, Montgomery, Morgan, Newton, Noble, Ohio, Orange, Owen, Parke, Perry, Pike, Porter, Posey, Pulaski, Putnam, Randolph, Ripley, Rush, Scott, Shelby, Spencer, St. Joseph, Starke, Steuben, Sullivan, Switzerland, Tippecanoe, Tipton, Union, Vanderburgh, Vermillion, Vigo, Wabash, Warren, Warrick, Washington, Wayne, Wells, White, Whitley |
| Bartholomew County Rural Electric Membership Corporation | BCREMC | Bartholomew, Jennings, Decatur, and Jackson | Indiana | Bartholomew, Decatur, Jackson, Jennings |
| Bluffton Utilities | NPBLUF | AT&T Non-Participating Code for Bluffton Utilities
Wells | Indiana | Wells |
| Boone Rural Electric Membership Corporation | NPBREM | AT&T Non-Participating Code for Boone Rural Electric
Boone, Clinton, Hamilton, Hendricks, and Montgomery | Indiana | Boone, Clinton, Hamilton, Hendricks, Montgomery |
| Brightspeed Indiana | BRISP1 | | Indiana | Adams, Allen, Benton, Carroll, Cass, Clinton, De Kalb, Dearborn, Elkhart, Franklin, Fulton, Huntington, Jasper, Jefferson, Jennings, Kosciusko, Lagrange, LaPorte, Marshall, Miami, Newton, Noble, Ohio, Porter, Pulaski, Ripley, Starke, Steuben, Switzerland, Tippecanoe, Tipton, Wabash, Wells, White, Whitley |
| Cannelton Utilities | NPCANU | AT&T Non-Participating Code for Cannelton Utilities
Perry | Indiana | Perry |
| Carroll White Rural Electric Membership Corporation | NPCWRE | AT&T Non-Participating Code for Carroll White Rural Electric
Carroll, White, Benton, Cass, Clinton, Howard, Jasper, Pulaski and Tippecanoe | Indiana | Benton, Carroll, Cass, Clinton, Howard, Jasper, Pulaski, Tippecanoe, White |
| Charter Spectrum | CHART1 | Gibson, Posey, Vanderburgh, Warrick, Spencer, Perry, Dubois, Pike Counties in Indiana counties | Indiana | Dearborn, Dubois, Franklin, Gibson, Jefferson, Jennings, Ohio, Perry, Pike, Posey, Ripley, Spencer, Switzerland, Vanderburgh, Warrick |
| Charter Spectrum | CHART2 | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| City of Auburn | NPCIAU | AT&T Non-Participating Code for City of Auburn
DeKalb | Indiana | De Kalb |
| City of Covington | NPCICV | AT&T Non-Participating Code for City of Covington
Fountain | Indiana | Fountain |
| City of Hammond | CTYHAM | Lake County | Indiana | Lake |
| Clark County Rural Electric Membership Corporation | NPCCRE | AT&T Non-Participating Code for Clark County Rural Electric Membership Corporation
Clark, Floyd, Jefferson, Scott, and Washington | Indiana | Clark, Floyd, Jefferson, Scott, Washington |
| Comcast | COMCA3 | Elkhart, Fulton, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Newton, Porter, Pulaski, St. Joseph and Starke counties, IN | Indiana | Elkhart, Fulton, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Newton, Porter, Pulaski, St. Joseph, Starke |
| Comcast Indiana | COMCA1 | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Comcast Indiana | COMCA2 | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Crawfordsville Electric Light & Power | CELP | Montgomery County - City of Crawfordsville | Indiana | Montgomery |
| Crown Castle Fiber | CROWNC | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Darlington Municipal Utilities | NPDRMU | AT&T Non-Participating Code for Darlington Municipal Utilities
Montgomery | Indiana | Montgomery |
| Daviess Martin County Rural Electric Membership Corporation | NPDMRE | AT&T Non-Participating Code for Daviess Martin County Rural Electric Membership Corporation
Lawrence, Daviess, Martin | Indiana | Daviess, Lawrence, Martin |
| Decatur County Rural Electric Membership Corporation | NPDCRE | AT&T Non-Participating Code for Decatur County Rural Electric Membership Corporation
Bartholomew, Decatur, Franklin, Jennings, Ripley, and Rush | Indiana | Bartholomew, Decatur, Franklin, Jennings, Ripley, Rush |
| Dubois Rural Electric Cooperative | NPDREC | AT&T Non-Participating Code for Dubois Rural Electric Cooperative
Crawford, Dubois, Pike, Perry, Orange, Martin | Indiana | Crawford, Dubois, Martin, Orange, Perry, Pike |
| Duke Energy | NPDKE | AT&T Non-Participating Code for Duke Energy | Indiana | Bartholomew, Benton, Boone, Brown, Carroll, Clark, Clay, Clinton, Crawford, Daviess, Dearborn, Decatur, Fayette, Floyd, Fountain, Franklin, Grant, Greene, Hamilton, Hancock, Harrison, Hendricks, Henry, Howard, Huntington, Jackson, Jefferson, Jennings, Johnson, Knox, Lawrence, Madison, Marion, Miami, Monroe, Montgomery, Morgan, Ohio, Owen, Parke, Porter, Posey, Putnam, Ripley, Rush, Scott, Shelby, St. Joseph, Sullivan, Switzerland, Tippecanoe, Tipton, Union, Vanderburgh, Vermillion, Vigo, Wabash, Warren, Warrick, Washington |
| Everstream Solutions LLC | NPESIN | Non-Participating code for NIPSCO | Indiana | Adams, Allen, Benton, Carroll, Cass, Clinton, De Kalb, Elkhart, Fulton, Howard, Huntington, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Miami, Newton, Noble, Porter, Pulaski, St. Joseph, Starke, Steuben, Tippecanoe, Tipton, Wabash, Warren, Wells, White, Whitley |
| Frankfort City Light & Power | NPFMUI | AT&T Non-Participating Code for Frankfort City Light & Power
Clinton, Tipton, Boone, Hamilton, and Tippecanoe | Indiana | Boone, Clinton, Hamilton, Tippecanoe, Tipton |
| Frontier Communications | FRONT | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Frontier Communications | FTRNIP | NIPSCO coverage area | Indiana | Adams, Allen, Benton, Carroll, Cass, Clinton, De Kalb, Elkhart, Fulton, Howard, Huntington, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Miami, Newton, Noble, Porter, Pulaski, St. Joseph, Starke, Steuben, Tippecanoe, Tipton, Wabash, Warren, Wells, White, Whitley |
| Gas City Municipal Utilities | NPGCMU | AT&T Non-Participating Code for Gas City Municipal Utilities
Grant | Indiana | Grant |
| Great Plain Communication (GPC) | GPC01 | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Greenfield Power & Light | GRNFPL | City of Greenfield, Indiana | Indiana | Hancock |
| Harrison Rural Electric Membership Corporation | NPHARE | AT&T Non-Participating Code for Harrison Rural Electric Membership Corporation
Harrison, Floyd, Crawford, Clark, and Washington | Indiana | Clark, Crawford, Floyd, Harrison, Washington |
| Heartland REMC | HREMC | Adams, Allen, Grant, Huntington ,Kosciusko, Miami, Wabash, Wells, and Whitley counties | Indiana | Adams, Allen, Grant, Huntington, Kosciusko, Miami, Wabash, Wells, Whitley |
| Hendricks Power Cooperative | NPHENP | AT&T Non-Participating Code for Hendricks Power Cooperative
Hendricks, Morgan, Montgomery, and Putnam | Indiana | Hancock, Hendricks, Marion, Montgomery, Morgan, Putnam |
| Henry County Rural Electric Membership Corporation | NPHCRE | AT&T Non-Participating Code for Henry County Rural Electric Membership Corporation
Henry, Fayette, Rush, Hancock, Madison, Delaware, Randolph, and Wayne | Indiana | Delaware, Fayette, Hancock, Henry, Madison, Randolph, Rush, Wayne |
| Indianapolis Power & Light Company | NPINPL | AT&T Non-Participating Code for Indianapolis Power & Light Company
Marion, Boone, Hamilton, Hancock, Hendricks, Johnson, Morgan, Owen, Putnam, and Shelby | Indiana | Boone, Hamilton, Hancock, Hendricks, Johnson, Marion, Morgan, Owen, Putnam, Shelby |
| Jackson County Rural Electric Membership Corporation | NPJCKC | AT&T Non-Participating Code for Jackson County Rurual Electric
Bartholomew, Brown, Clark, Jackson, Jefferson, Jennings, Lawrence, Monroe, Scott, and Washington | Indiana | Bartholomew, Brown, Clark, Jackson, Jefferson, Jennings, Lawrence, Monroe, Scott, Washington |
| Jay County Rural Electric Membership Corporation | NPJAYR | AT&T Non-Participating Code for Jay County Rural Electric
Jay, Adams, Blackford, Delaware, Randolph, and Wells | Indiana | Adams, Blackford, Delaware, Jay, Randolph, Wells |
| Johnson County Rural Electric Membership Corporation | NPJCRE | AT&T Non-Participating Code for Johnson County Rural EMC
Johnson, Morgan, Shelby, and Brown | Indiana | Brown, Johnson, Morgan, Shelby |
| Kankakee Valley Rural Electric Membership Corporation | NPKVRE | AT&T Non-Participating Code for Kankakee Valley Rural EMC
LaPorte, Porter, Lake, St. Joseph, Pulaski, Starke, and Marshall | Indiana | Lake, LaPorte, Marshall, Porter, Pulaski, St. Joseph, Starke |
| Lebanon Utilities | NPLBNU | AT&T Non-Participating Code for Lebanon Utilities
Boone | Indiana | Boone |
| Marshall County Rural Electric Membership Corporation | NPMCRE | AT&T Non-Participating Code for Marshall County Rural EMC
Marshall, Elkhart, Fulton, Kosciusko, St. Joseph, and Starke | Indiana | Elkhart, Fulton, Kosciusko, Marshall, St. Joseph, Starke |
| MCImetro | MCI | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Mediacom Communications – Kendallville | MEDINE | Adams, Allen, DeKalb, LaGrange, Nobel, Steuben, Wabash, Wells, Whitley | Indiana | Adams, Allen, Lagrange, Steuben, Wabash, Wells, Whitley |
| Mediacom Communications – Knox | MEDINW | Elkhart, Fulton, Jasper, Kosciusko, Lake, Laporte, Marshall, Newton, Porter, Pulaski, St. Joseph, Starke | Indiana | Elkhart, Fulton, Jasper, Kosciusko, Lake, LaPorte, Marshall, Newton, Porter, Pulaski, St. Joseph, Starke |
| Metronet | CMET01 | Indiana | Indiana | Adams, Allen, Bartholomew, Benton, Blackford, Boone, Brown, Carroll, Cass, Clark, Clay, Clinton, Crawford, Daviess, De Kalb, Dearborn, Decatur, Delaware, Dubois, Elkhart, Fayette, Floyd, Fountain, Franklin, Fulton, Gibson, Grant, Greene, Hamilton, Hancock, Harrison, Hendricks, Henry, Howard, Huntington, Jackson, Jasper, Jay, Jefferson, Jennings, Johnson, Knox, Kosciusko, Lagrange, Lake, LaPorte, Lawrence, Madison, Marion, Marshall, Martin, Miami, Monroe, Montgomery, Morgan, Newton, Noble, Ohio, Orange, Owen, Parke, Perry, Pike, Porter, Posey, Pulaski, Putnam, Randolph, Ripley, Rush, Scott, Shelby, Spencer, St. Joseph, Starke, Steuben, Sullivan, Switzerland, Tippecanoe, Tipton, Union, Vanderburgh, Vermillion, Vigo, Wabash, Warren, Warrick, Washington, Wayne, Wells, White, Whitley |
| Miami-Cass Rural Electric Membership Corporation | NPMICA | AT&T Non-Participating Code for Miami-Cass Rural EMC
Miami, Cass, Wabash | Indiana | Cass, Miami, Wabash |
| Mishawaka Utilities | MSHWKA | St. Joseph County | Indiana | St. Joseph |
| Ninestar Connect - Electric/Water/Sewer | NP9STR | AT&T Non-Participating Code for Ninestar Connect
Hancock, Hamilton, Madison, and Rush | Indiana | Hamilton, Hancock, Madison, Rush |
| Noble Rural Electric Membership Corporation | NPNOBL | AT&T Non-Participating Code for Noble Rural EMC
DeKalb, Noble, Whitley | Indiana | De Kalb, Noble, Whitley |
| Northern Indiana Power (NIPSCO) | NPNIP | AT&T Non-Participating Code for NIPSCO. Used for SPANS tickets. | Indiana | Adams, Allen, Bartholomew, Benton, Blackford, Boone, Brown, Carroll, Cass, Clark, Clay, Clinton, Crawford, Daviess, De Kalb, Dearborn, Decatur, Delaware, Dubois, Elkhart, Fayette, Floyd, Fountain, Franklin, Fulton, Gibson, Grant, Greene, Hamilton, Hancock, Harrison, Hendricks, Henry, Howard, Huntington, Jackson, Jasper, Jay, Jefferson, Jennings, Johnson, Knox, Kosciusko, Lagrange, Lake, LaPorte, Lawrence, Madison, Marion, Marshall, Martin, Miami, Monroe, Montgomery, Morgan, Newton, Noble, Ohio, Orange, Owen, Parke, Perry, Pike, Porter, Posey, Pulaski, Putnam, Randolph, Ripley, Rush, Scott, Shelby, Spencer, St. Joseph, Starke, Steuben, Sullivan, Switzerland, Tippecanoe, Tipton, Union, Vanderburgh, Vermillion, Vigo, Wabash, Warren, Warrick, Washington, Wayne, Wells, White, Whitley |
| Northern Indiana Public Service Company (NIPSCO) | NIPSCO | This code is used for third-party attachment transfer requests only. Code is not to be used for new attachment applications
Northern Indiana
(Lake, Porter, LaPorte, St Joseph ,Elkhart, LaGrange, Stueben, Noble, DeKalb, Newton, Jasper, Starke, Marshall, Kosciusko, Whitley, Allen, Pulaski, Fulton, Wabash, Huntington, Wells, Adams, Benton, White, Carroll, Cass, Miami, Warren, Tippecanoe, Clinton, Howard, Tipton). | Indiana | Adams, Allen, Benton, Carroll, Cass, Clinton, De Kalb, Elkhart, Fulton, Howard, Huntington, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Miami, Newton, Noble, Porter, Pulaski, St. Joseph, Starke, Steuben, Tippecanoe, Tipton, Wabash, Warren, Wells, White, Whitley |
| Northwestern Indiana Telephone Company | NPNITC | Non-Participating code representing NITCO used by NIPSCO (Orbital) | Indiana | Adams, Allen, Benton, Carroll, Cass, Clinton, De Kalb, Elkhart, Fulton, Howard, Huntington, Jasper, Kosciusko, Lagrange, Lake, LaPorte, Marshall, Miami, Newton, Noble, Porter, Pulaski, St. Joseph, Starke, Steuben, Tippecanoe, Tipton, Wabash, Warren, Wells, White, Whitley |
| Parke County Rural Electric Membership Corporation | NPPCRE | AT&T Non-Participating Code for
Parke County Rural EMC
Parke, Putnam, Clay, Vigo, Montgomery, and Fountain | Indiana | Clay, Fountain, Montgomery, Parke, Putnam, Vigo |
| Peru Utilities | NPPRUU | AT&T Non-Participating Code for Peru Utilities
Miami | Indiana | Miami |
| RushShelby Energy | NPRUSE | AT&T Non-Participating Code for RushShelby Energy
Rush, Shelby, Fayette, Franklin, Bartholomew, Decatur, Hancock, Henry, Johnson | Indiana | Bartholomew, Decatur, Fayette, Franklin, Hancock, Henry, Johnson, Rush, Shelby |
| SEI Communications | SEICOM | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| SEI Fiber | SEIF | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| SEI REMC ( Southeastern REMC) | SEREMC | Ripley, Dearborn, Ohio, Jennings, Jefferson, Switzerland and Franklin Counties | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| South Central Indiana Rural Electric Membership Corporation | NPSCIR | AT&T Non-Participating Code for South Central Indiana Rural EMC
Morgan, Monroe, Owen, Brown, Putnam, Clay, and Johnson | Indiana | Brown, Clay, Johnson, Monroe, Morgan, Owen, Putnam |
| Southern Indiana Power | NPSINP | AT&T Non-Participating Code for Southern Indiana Power
Perry, Spencer, Dubois, Warrick | Indiana | Dubois, Perry, Spencer, Warrick |
| Tell City Electric Department | NPTELL | AT&T Non-Participating Code for Tell City Electric Department
Perry, Vanderburgh | Indiana | Perry, Vanderburgh |
| Tipmont Rural Electric Membership Corporation | NPTPMT | AT&T Non-Participating Code for Tipmont Rural EMC
Tippecanoe, Montgomery, Fountain, Clinton, Carroll, White, Benton, Boone | Indiana | Benton, Boone, Carroll, Clinton, Fountain, Montgomery, Tippecanoe, White |
| Town of Brooklyn | NPTBRK | AT&T Non-Participating Code for Town of Brooklyn
Morgan | Indiana | Morgan |
| Town of Edinburg | NPEDBG | AT&T Non-Participating Code for Town of Edinburg
Johnson, Bartholomew, Shelby | Indiana | Bartholomew, Johnson, Shelby |
| Town of Ladoga | NPTLAD | AT&T Non-Participating Code for Town of Ladoga
Montgomery | Indiana | Montgomery |
| Town of Middletown | NPTMID | AT&T Non-Participating Code for Town of Middletown
Henry | Indiana | Henry |
| Town of Veedersburg | NPVEED | AT&T Non-Participating Code for Town of Veedersburg
Fountain | Indiana | Fountain |
| Town of Waynetown | NPTWYN | AT&T Non-Participating Code for Town of Waynetown
Montgomery | Indiana | Montgomery |
| Town of Williamsport | NPTWIL | AT&T Non-Participating Code for Town of Williamsport
Warren | Indiana | Warren |
| UDWI Rural Electric Membership Corporation | NPUDWI | AT&T Non-Participating Code for UDWI Rural EMC
Clay, Daviess, Knox, Lawrence, Martin, Monroe, Owen, Putnam, Sullivan, Vigo | Indiana | Clay, Daviess, Knox, Lawrence, Martin, Monroe, Owen, Putnam, Sullivan, Vigo |
| Vectren Utility Holdings Incorporated | NPVECU | AT&T Non-Participating Code for Vectren Utility Holdings Incorporated
Bartholomew, Clark, Decatur, Delaware, Floyd, Henry, Jefferson, Johnson, Lawrence, Martin, Monroe, Rush, Shelby, Carroll, Clinton, Fountain, Montgomery, Morgan, Tippecanoe, Vermillion, Vigo, Warren, White, Boone, Clay, Grant, Hamilton, Hancock, Hendricks, Huntington, Miami, Parke, Putnam, Tipton, Wabash, Blackford, Jay, Madison, Randolph, Wayne, and Wells. The Indiana South region specifically includes Daviess, Dubois, Gibson, Knox, Pike, Posey, Spencer, Vanderburgh, and Warrick | Indiana | Bartholomew, Blackford, Boone, Carroll, Clark, Clay, Clinton, Daviess, Decatur, Delaware, Dubois, Floyd, Fountain, Gibson, Grant, Hamilton, Hancock, Hendricks, Henry, Huntington, Jay, Jefferson, Johnson, Knox, Lawrence, Madison, Martin, Miami, Monroe, Montgomery, Morgan, Parke, Pike, Posey, Putnam, Randolph, Rush, Shelby, Spencer, Tippecanoe, Tipton, Vanderburgh, Vermillion, Vigo, Wabash, Warren, Warrick, Wayne, Wells, White |
| Vero Fiber Networks (IN) | VEROIN | Indiana (IN) Counties: Cass, Daviess, Lake | Indiana | Cass, Daviess, Lake |
| Warren County Rural Electric Membership Corporation | NPWCRE | AT&T Non-Participating Code for Warren County Rural EMC
Benton, Fountain, Tippecanoe, Vermillion, and Warren | Indiana | Benton, Fountain, Tippecanoe, Vermillion, Warren |
| Washington City Light & Power | WASHLP | Daviess, Montgomery and Washington counties | Indiana | Daviess, Montgomery, Washington |
| WIN Energy Rural Electric Membership Corporation | NPWINE | AT&T Non-Participating Code for WIN Energy Rural EMC
Clay, Gibson, Greene, Knox, Pike, Posey, Sullivan, and Vigo | Indiana | Clay, Gibson, Greene, Knox, Pike, Posey, Sullivan, Vigo |
| Windstream | WINDST | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |
| Zayo Fiber Solutions | ZAYOIN | | Indiana | Dearborn, Franklin, Jefferson, Jennings, Ohio, Ripley, Switzerland |