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  • Locations For Telephone Prefix 400

    This page (and others like it) shows the area codes and states / provinces / territories / countries for a specific prefix. In AAA-PPP-NNNN the PPP is the prefix (the AAA is the area code).

    To find the exact city location for any prefix, please use our search engine HERE.


    201-400 NJ

    202-400 DC

    203-400 CT

    205-400 AL

    206-400 WA

    207-400 ME

    210-400 TX

    212-400 NY

    213-400 CA

    214-400 TX

    215-400 PA

    216-400 OH

    217-400 IL

    218-400 MN

    224-400 IL

    225-400 LA

    226-400 ON

    229-400 GA

    234-400 OH

    239-400 FL

    240-400 MD

    248-400 MI

    250-400 BC

    254-400 TX

    256-400 AL

    270-400 KY

    281-400 TX

    289-400 ON

    301-400 MD

    302-400 DE

    303-400 CO

    304-400 WV

    305-400 FL

    309-400 IL

    310-400 CA

    312-400 IL

    313-400 MI

    314-400 MO

    315-400 NY

    317-400 IN

    318-400 LA

    319-400 IA

    320-400 MN

    321-400 FL

    323-400 CA

    325-400 TX

    330-400 OH

    334-400 AL

    347-400 NY

    352-400 FL

    360-400 WA

    361-400 TX

    401-400 RI

    402-400 NE

    403-400 AB

    407-400 FL

    408-400 CA

    409-400 TX

    410-400 MD

    412-400 PA

    413-400 MA

    415-400 CA

    416-400 ON

    417-400 MO

    418-400 QC

    419-400 OH

    423-400 TN

    424-400 CA

    432-400 TX

    435-400 UT

    438-400 QC

    440-400 OH

    441-400 BM

    443-400 MD

    450-400 QC

    469-400 TX

    479-400 AR

    484-400 PA

    501-400 AR

    502-400 KY

    503-400 OR

    504-400 LA

    505-400 NM

    506-400 NB

    508-400 MA

    510-400 CA

    512-400 TX

    513-400 OH

    514-400 QC

    518-400 NY

    519-400 ON

    520-400 AZ

    530-400 CA

    540-400 VA

    541-400 OR

    561-400 FL

    562-400 CA

    567-400 OH

    570-400 PA

    573-400 MO

    574-400 IN

    581-400 QC

    585-400 NY

    587-400 AB

    601-400 MS

    602-400 AZ

    603-400 NH

    604-400 BC

    605-400 SD

    609-400 NJ

    610-400 PA

    613-400 ON

    615-400 TN

    617-400 MA

    618-400 IL

    619-400 CA

    620-400 KS

    626-400 CA

    630-400 IL

    631-400 NY

    636-400 MO

    646-400 NY

    647-400 ON

    650-400 CA

    651-400 MN

    661-400 CA

    662-400 MS

    671-400 GU

    678-400 GA

    701-400 ND

    702-400 NV

    703-400 VA

    704-400 NC

    706-400 GA

    707-400 CA

    708-400 IL

    712-400 IA

    713-400 TX

    714-400 CA

    716-400 NY

    717-400 PA

    720-400 CO

    724-400 PA

    727-400 FL

    731-400 TN

    732-400 NJ

    740-400 OH

    754-400 FL

    760-400 CA

    763-400 MN

    769-400 MS

    770-400 GA

    773-400 IL

    774-400 MA

    775-400 NV

    778-400 BC

    779-400 IL

    780-400 AB

    781-400 MA

    786-400 FL

    787-400 PR

    801-400 UT

    803-400 SC

    804-400 VA

    805-400 CA

    806-400 TX

    810-400 MI

    812-400 IN

    813-400 FL

    815-400 IL

    817-400 TX

    818-400 CA

    819-400 QC

    828-400 NC

    830-400 TX

    832-400 TX

    843-400 SC

    847-400 IL

    850-400 FL

    857-400 MA

    858-400 CA

    859-400 KY

    862-400 NJ

    864-400 SC

    870-400 AR

    872-400 IL

    903-400 TX

    904-400 FL

    905-400 ON

    908-400 NJ

    909-400 CA

    910-400 NC

    913-400 KS

    914-400 NY

    915-400 TX

    916-400 CA

    917-400 NY

    919-400 NC

    920-400 WI

    925-400 CA

    931-400 TN

    936-400 TX

    939-400 PR

    940-400 TX

    941-400 FL

    949-400 CA

    952-400 MN

    954-400 FL

    956-400 TX

    971-400 OR

    972-400 TX

    973-400 NJ

    978-400 MA

    979-400 TX

    985-400 LA

    989-400 MI