Area Code 304

Area code 304 was established in October 1947 as one of the original 86 North American area codes under AT&T's National Numbering Plan. It served as the sole area code for the entire state of West Virginia for over 62 years, until area code 681 was activated as an overlay on March 28, 2009. The middle digit "0" in 304 confirmed full-state coverage under the original NANP rules, where a zero indicated an entire state and a one indicated a portion of a state. On a rotary phone, 304 required 17 pulses (3 + 10 + 4), above the average of 14.1 for codes created around the same time. Source: Wikipedia

Key milestones:

• 1947: Area code 304 established as one of the original 86 North American area codes. It covered the entire state of West Virginia, from the Eastern Panhandle to the southern coalfields. The middle digit "0" confirmed statewide coverage under original NANP conventions. Source: Wikipedia
• 2000: NANPA petitioned the WV Public Service Commission for area code relief due to projected exhaustion of the 304 NPA. Case No. 00-0953-T-PC was opened before the Commission. Growth of wireless devices, fax machines, and pagers was driving number demand across the state. Source: WV PSC Case 00-0953-T-PC
• May 2004: The WV PSC Working Group, comprising Commission Staff, the Consumer Advocate, and telecommunications carriers, unanimously recommended an all-services overlay for the 304 NPA. This consensus recommendation preceded the FCC pooling order by nearly two years. Source: Wikipedia
• March 15, 2006: The FCC issued Order 06-14 (CC Docket No. 99-200), granting the WV PSC authority to implement mandatory thousands-block number pooling in the 304 NPA. The 304 NPA was projected to exhaust in Q1 2006. Pooling allowed carriers to share blocks of 1,000 numbers instead of receiving entire 10,000-number blocks, delaying exhaustion from Q1 2006 to Q4 2008. Source: FCC 06-14
• January 29, 2008: The WV PSC ordered a geographic split along the Charleston-Clarksburg LATA boundary. The proposed split would have kept Charleston, Parkersburg, and southern cities in 304, while northern and eastern cities received a new area code. The Commission chairman dissented in favor of an overlay. Source: WV PSC Case 00-0953-T-PC
• February 13, 2008: Following petitions for reconsideration from AT&T, Verizon Wireless, and other parties, the Commission unanimously reversed its decision and ordered an all-services overlay instead. West Virginia became the first state served by a single code to install an overlay plan. Source: WV PSC Case 00-0953-T-PC
• March 21, 2008: NANPA Planning Letter 375 announced implementation details for the 681 overlay. Permissive 10-digit dialing began July 26, 2008. Source: Wikipedia
• February 28, 2009: Mandatory 10-digit dialing took effect for all existing 304 numbers. Source: Wikipedia
• March 28, 2009: Area code 681 activated as overlay for 304. New 681 numbers became available for the first time. West Virginia became the first state served by a single code to install an overlay plan. Source: Wikipedia

Area code 304's regulatory history reflects the broader tension in numbering policy between geographic splits and overlays. The 15-day reversal from split to overlay in January-February 2008 remains one of the fastest regulatory about-faces in US area code history, driven by industry opposition to the burden of number changes for rural customers.

Area code 304's regulatory history includes a critical FCC pooling order, a WV PSC case that went from split to overlay in 15 days, and the implementation details that made West Virginia's first overlay possible. The 304 NPA was one of the original 86 area codes established in 1947 and served the entire state of West Virginia until the 681 overlay in 2009. Source: Wikipedia