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NDC: 503

This is the National Destination Code(NDC):503 page list. Its detail is as below.
Area code 503 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Oregon. In 1995, area code 541 was created as an overlay to area code 503. In 2000, area code 971 was created as an overlay to area code 503. Currently, the largest city it serves is Portland, OR, and it overlaps coverage areas with area code 971.
Prefix State Primary city Usage Carrier
(503) 200- Oregon Portland Wireless New Cingular Wireless PCS
(503) 201- Oregon Portland Wireless Cellco Partnership DBA Verizon Wireless
(503) 202- Oregon Portland Wireless Usa Mobility Wireless
(503) 203- Oregon Portland Landline Qwest Corporation
(503) 204- Oregon Portland Wireless Usa Mobility Wireless
(503) 205- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 206- Oregon Portland Landline Zayo Group
(503) 207- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 208- Oregon Portland Wireless Cricket Communications
(503) 209- Oregon Portland Wireless Sprint Spectrum L.p.
(503) 210- Oregon Portland Landline Electric Lightwave DBA Integra Telecom
(503) 212- Oregon Portland Landline Electric Lightwave DBA Integra Telecom
(503) 213- Oregon Portland Landline Electric Lightwave DBA Integra Telecom
(503) 214- Oregon Portland Landline Electric Lightwave DBA Integra Telecom
(503) 215- Oregon Portland Landline Qwest Corporation
(503) 216- Oregon Portland Landline Qwest Corporation
(503) 217- Oregon Sherwood Landline Electric Lightwave DBA Integra Telecom
(503) 218- Oregon Tualatin Landline Electric Lightwave DBA Integra Telecom
(503) 219- Oregon Portland Landline Qwest Corporation
(503) 220- Oregon Portland Landline Qwest Corporation
(503) 221- Oregon Portland Landline Qwest Corporation
(503) 222- Oregon Portland Landline Qwest Corporation
(503) 223- Oregon Portland Landline Qwest Corporation
(503) 224- Oregon Portland Landline Qwest Corporation
(503) 225- Oregon Portland Landline Qwest Corporation
(503) 226- Oregon Portland Landline Qwest Corporation
(503) 227- Oregon Portland Landline Qwest Corporation
(503) 228- Oregon Portland Landline Qwest Corporation
(503) 229- Oregon Portland Landline Qwest Corporation
(503) 230- Oregon Portland Landline Qwest Corporation
(503) 231- Oregon Portland Landline Qwest Corporation
(503) 232- Oregon Portland Landline Qwest Corporation
(503) 233- Oregon Portland Landline Qwest Corporation
(503) 234- Oregon Portland Landline Qwest Corporation
(503) 235- Oregon Portland Landline Qwest Corporation
(503) 236- Oregon Portland Landline Qwest Corporation
(503) 237- Oregon Portland Wireless Usa Mobility Wireless
(503) 238- Oregon Portland Landline Qwest Corporation
(503) 239- Oregon Portland Landline Qwest Corporation
(503) 240- Oregon Portland Landline Qwest Corporation
(503) 241- Oregon Portland Landline Qwest Corporation
(503) 242- Oregon Portland Landline Qwest Corporation
(503) 243- Oregon Portland Landline Qwest Corporation
(503) 244- Oregon Portland Landline Qwest Corporation
(503) 245- Oregon Portland Landline Qwest Corporation
(503) 246- Oregon Portland Landline Qwest Corporation
(503) 247- Oregon Portland Landline Qwest Corporation
(503) 248- Oregon Portland Landline Qwest Corporation
(503) 249- Oregon Portland Landline Qwest Corporation
(503) 250- Oregon Portland Landline Qwest Corporation
(503) 251- Oregon Portland Landline Qwest Corporation
(503) 252- Oregon Portland Landline Qwest Corporation
(503) 253- Oregon Portland Landline Qwest Corporation
(503) 254- Oregon Portland Landline Qwest Corporation
(503) 255- Oregon Portland Landline Qwest Corporation
(503) 256- Oregon Portland Landline Qwest Corporation
(503) 257- Oregon Portland Landline Qwest Corporation
(503) 258- Oregon Portland Landline Qwest Corporation
(503) 259- Oregon Beaverton Landline Frontier Communications Northwest
(503) 260- Oregon Portland Wireless Cellco Partnership DBA Verizon Wireless
(503) 261- Oregon Portland Landline Qwest Corporation
(503) 262- Oregon Portland Landline Qwest Corporation
(503) 263- Oregon Canby Landline Canby Telephone Association
(503) 264- Oregon Hillsboro Landline Mcimetro Access Transmission Services LLC
(503) 265- Oregon Tigard Landline Teleport Communications America
(503) 266- Oregon Canby Landline Canby Telephone Association
(503) 267- Oregon Portland Wireless T-mobile Usa
(503) 268- Oregon Beaverton Landline Teleport Communications America
(503) 269- Oregon Salem Wireless Sprint Spectrum L.p.
(503) 270- Oregon Beaverton Landline Teleport Communications America
(503) 271- Oregon Portland Wireless Usa Mobility Wireless
(503) 272- Oregon Government Camp Landline Centurytel Of Oregon DBA Centurylink
(503) 273- Oregon Portland Landline Qwest Corporation
(503) 274- Oregon Portland Landline Qwest Corporation
(503) 275- Oregon Portland Landline Qwest Corporation
(503) 276- Oregon Portland Landline Qwest Corporation
(503) 277- Oregon Beaverton Landline Frontier Communications Northwest
(503) 278- Oregon Portland Wireless Cellco Partnership DBA Verizon Wireless
(503) 279- Oregon Portland Landline Qwest Corporation
(503) 280- Oregon Portland Landline Qwest Corporation
(503) 281- Oregon Portland Landline Qwest Corporation
(503) 282- Oregon Portland Landline Qwest Corporation
(503) 283- Oregon Portland Landline Qwest Corporation
(503) 284- Oregon Portland Landline Qwest Corporation
(503) 285- Oregon Portland Landline Qwest Corporation
(503) 286- Oregon Portland Landline Qwest Corporation
(503) 287- Oregon Portland Landline Qwest Corporation
(503) 288- Oregon Portland Landline Qwest Corporation
(503) 289- Oregon Portland Landline Qwest Corporation
(503) 290- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 291- Oregon Portland Landline Qwest Corporation
(503) 292- Oregon Portland Landline Qwest Corporation
(503) 293- Oregon Portland Landline Qwest Corporation
(503) 294- Oregon Portland Landline Qwest Corporation
(503) 295- Oregon Portland Landline Qwest Corporation
(503) 296- Oregon Portland Landline Qwest Corporation
(503) 297- Oregon Portland Landline Qwest Corporation
(503) 298- Oregon Astoria Landline Level 3 Communications
(503) 299- Oregon Portland Landline Qwest Corporation
(503) 300- Oregon Bay City Landline Charter Fiberlink Or-ccvii