(assigned, not assigned, special, etc.)
The "North American Numbering Plan" has a myriad of area and special codes. This page covers all "possible" codes and other codes in the 300-399 range along with their status.
Important note: The status of area and other codes is constantly changing. This is the latest information we have.
codes in the 200-299 range
codes in the 300-399 range - THIS PAGE
codes in the 400-499 range
codes in the 500-599 range
codes in the 600-699 range
codes in the 700-799 range
codes in the 800-899 range
codes in the 900-999 range
| Code |
Description |
| 300 | (reserved - easily recognizable number) |
| 301 | Maryland |
| 302 | Delaware |
| 303 | Colorado |
| 304 | West Virginia |
| 305 | Florida |
| 306 | Manitoba |
| 307 | Wyoming |
| 308 | Nebrasak |
| 309 | Illinois |
| 310 | California |
| 311 | (not an area code - non-emergency number to reach local government - dial three digits) |
| 312 | Illinois |
| 313 | Michigan |
| 314 | Missouri |
| 315 | New York |
| 316 | Kansas |
| 317 | Indiana |
| 318 | Louisiana |
| 319 | Iowa |
| 320 | Minnesota |
| 321 | Florida |
| 322 | (reserved - easily recognizable number) |
| 323 | California |
| 324 | Florida |
| 325 | Texas |
| 326 | Ohio |
| 327 | Arkansas |
| 328 | (not assigned) |
| 329 | New York |
| 330 | Ohio |
| 331 | Illinois |
| 332 | New York |
| 333 | (reserved - easily recognizable number) |
| 334 | Alabama |
| 335 | (not assigned) |
| 336 | North Carolina |
| 337 | Louisiana |
| 338 | (not assigned) |
| 339 | Massachusetts |
| 340 | U.S. Virgin Islands |
| 341 | California |
| 342 | (not assigned) |
| 343 | Ontario |
| 344 | (reserved - easily recognizable number) |
| 345 | Cayman Islands |
| 346 | Texas |
| 347 | New York |
| 348 | (not assigned) |
| 349 | (not assigned) |
| 350 | California |
| 351 | Massachusetts |
| 352 | Florida |
| 353 | Wisconsin |
| 354 | Quebec |
| 355 | (reserved - easily recognizable number) |
| 356 | (not assigned) |
| 357 | (not assigned) |
| 358 | (not assigned) |
| 359 | (not assigned) |
| 360 | Washington |
| 361 | Texas |
| 362 | (not assigned) |
| 363 | New York |
| 364 | Kentucky |
| 365 | Ontario |
| 366 | (reserved - easily recognizable number) |
| 367 | Quebec |
| 368 | Alberta |
| 369 | California |
| 370 | (reserved for consecutive numbers if ever needed) |
| 371 | (reserved for consecutive numbers if ever needed) |
| 372 | (reserved for consecutive numbers if ever needed) |
| 373 | (reserved for consecutive numbers if ever needed) |
| 374 | (reserved for consecutive numbers if ever needed) |
| 375 | (reserved for consecutive numbers if ever needed) |
| 376 | (reserved for consecutive numbers if ever needed) |
| 377 | (reserved for consecutive numbers if ever needed) (reserved - easily recognizable number) |
| 378 | (reserved for consecutive numbers if ever needed) |
| 379 | (reserved for consecutive numbers if ever needed) |
| 380 | Ohio |
| 381 | (not assigned) |
| 382 | Ontario |
| 383 | (not assigned) |
| 384 | (not assigned) |
| 385 | Utah |
| 386 | Florida |
| 387 | (reserved for Toronto, Ontario) |
| 388 | (reserved - easily recognizable number) |
| 389 | (not assigned) |
| 390 | (reserved for possible numbering expansion in the future) |
| 391 | (reserved for possible numbering expansion in the future) |
| 392 | (reserved for possible numbering expansion in the future) |
| 393 | (reserved for possible numbering expansion in the future) |
| 394 | (reserved for possible numbering expansion in the future) |
| 395 | (reserved for possible numbering expansion in the future) |
| 396 | (reserved for possible numbering expansion in the future) |
| 397 | (reserved for possible numbering expansion in the future) |
| 398 | (reserved for possible numbering expansion in the future) |
| 399 | (reserved for possible numbering expansion in the future) |
codes in the 200-299 range
codes in the 300-399 range - THIS PAGE
codes in the 400-499 range
codes in the 500-599 range
codes in the 600-699 range
codes in the 700-799 range
codes in the 800-899 range
codes in the 900-999 range