North American Numbers Source-cited · ownership disclosed
Area code
436
In service
United States · since 2024

Cleveland suburbs (overlay)

All-service overlay of area code 440, serving the Greater Cleveland suburbs and outlying northeastern Ohio counties. Activated in 2024.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Cleveland suburbs (overlay)
Type
geographic
Status
in service
In service since
2024
Projected exhaust
2120 Q2

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 436 is

Greater Cleveland suburbs and surrounding counties, coextensive with area code 440.

Communities served wholly or partly by 436:

ParmaLorainElyriaMentorWestlakeStrongsville

Serves the full 440 footprint; representative list.

B · Relationships

How it relates to other codes

The codes 436 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2024 440 Cleveland suburbs All-service overlay sharing the 440 numbering plan area.
What's changing. Overlay of 440, in service since March 1, 2024.
C · History

How 436 got here

2022-12
PUCO approved the 436 overlay after projecting 440 exhaust by Q3 2024.
Source: PUCO / Wikipedia: Area codes 440 and 436
2024-03-01
Activated as an all-service overlay of 440.
Source: Wikipedia: Area codes 440 and 436
D · Capacity

How full it is

Prefixes assigned
14
Prefixes available
786

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 436 with another code →
Sources
Wikipedia ↗
Area codes 440 and 436
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.