NANPA NPA-NXX TELECOM REGISTRY // AREA CODE 301

Area Code 301 (US NANPA Numbering Plan Area 301, US) Carrier & TCPA Lookup.

Real-time NANPA NPA-NXX carrier line type, operating company number (OCN), wireless porting status, and TCPA DNC serial litigator verification for (301) phone numbers in US NANPA Numbering Plan Area 301, US.

Run in Live Workbench View Credit Tiers ($49/mo)

EVALUATE WITH AI // Ask ChatGPT Ask Perplexity Ask Claude

NANPA Area Code (301) Telemetry Profile

NPA CODE: +1 (301)
PRIMARY MARKET: US NANPA Numbering Plan Area 301, US
TIMEZONE: US Standard Time
DOMINANT CARRIERS: Verizon Wireless, AT&T Mobility, T-Mobile USA, Bandwidth CLEC
TCPA DNC SHIELD: ACTIVE (1 CREDIT / LOOKUP)

Test Area Code 301 via cURL or MCP

curl -s "https://verifygrid.io/v1/verify/telecom?phone=%2B13015550199" \
  -H "Authorization: Bearer vg_test_sandbox"

# Returns E.164, line_type (mobile/voip/landline),
# carrier_name, OCN, tcpa_dnc_listed, and safe_to_autodial

// NANPA INDEXPROGRAMMATIC US AREA CODE VERIFICATION DIRECTORY