NANPA NPA-NXX TELECOM REGISTRY // AREA CODE 773

Area Code 773 (Chicago (Residential & Neighborhoods), IL) 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 (773) phone numbers in Chicago (Residential & Neighborhoods), IL.

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

NANPA Area Code (773) Telemetry Profile

NPA CODE: +1 (773)
PRIMARY MARKET: Chicago (Residential & Neighborhoods), IL
TIMEZONE: CST (UTC-6)
DOMINANT CARRIERS: Illinois Bell (AT&T), T-Mobile USA, RCN
TCPA DNC SHIELD: ACTIVE (1 CREDIT / LOOKUP)

Test Area Code 773 via cURL or MCP

curl -s "https://www.verifygrid.io/v1/verify/telecom?phone=%2B17735550199" \
  -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