Area code 436

About area code 436

Area code 436 is a geographic area code in Ohio, in service since March 1, 2024, according to the North American Numbering Plan Administrator (NANPA). It is an overlay: 436 and 440 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone.

Ten-digit and seven-digit dialing in 436

According to NANPA's dialing-plan data, local calls within 436 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service providers discretion excluding CMRS providers"

A new code in an overlay

NANPA's utilized-code file dated 10/01/2026 lists no central office codes assigned in 436 yet. NANPA assigned the code on December 21, 2022 and put it in service on March 1, 2024. In an overlay, numbers for the shared territory keep coming from the older code (440) until carriers start drawing codes from 436, so a business phone number requested here today will most likely carry 440.

440 has been in service since August 16, 1997 and has 757 assigned codes held by 44 carriers across 62 rate centers. Its largest code holders are Ohio Bell Tel CO (124), Cellco Partnership d/b/a Verizon Wireless - Oh (115), and Level 3 Communications, LLC - Oh (68). Its most populous matched places are Cleveland (365,000), Lorain (65,751), Elyria (53,604), and Mentor (47,113).

Adding an overlay leaves existing numbers unchanged: nobody has to switch numbers, but local calls need all ten digits, and new lines can start with either code.

Places in the 436/440 territory

54 Census places are matched to rate centers with exchanges in 440, the code 436 overlays. The most populous are Cleveland (365,000), Lorain (65,751), Elyria (53,604), and Mentor (47,113). Their pages list the prefixes and carriers that serve each town today; numbers from 436 will appear alongside them as carriers draw new codes.

Getting a 436 number for your business

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in area code 436 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.