Phone prefixes in Odessa

In numbers

In-service prefixes

11

Telephone numbers covered

110,000

Carriers

8

Area codes

5

Provinces and territories

2

First assignment

March 7, 2008

Most recent assignment

April 17, 2026

Provinces and territories

This name is used for separate rate centres in 2 provinces. The prefixes below share a name in the CNAC register but belong to different communities.

• Ontario — 6 prefixes
• Saskatchewan — 5 prefixes

Odessa’s share of its area codes

Within area code 343, Odessa accounts for only 4 of 641 prefixes (0.6%): the code is dominated by Ottawa-Hull and spread over 116 rate centres. Within area code 639, Odessa accounts for only 3 of 776 prefixes (0.4%): the code is dominated by Regina and spread over 202 rate centres. Within area code 613, Odessa accounts for only 2 of 772 prefixes (0.3%): the code is dominated by Ottawa-Hull and spread over 132 rate centres. Within area code 306, Odessa accounts for only 1 of 777 prefixes (0.1%): the code is dominated by Saskatoon and spread over 228 rate centres. Within area code 474, Odessa accounts for only 1 of 88 prefixes (1.1%): the code is dominated by Saskatoon and spread over 70 rate centres.

Who holds these numbers

Distributel holds the largest share at 3 prefixes, 27.3% of the total, ahead of 7 other carriers. Code by code: in 343, Distributel leads with 1 of 4 prefixes ahead of 3 others; in 639, Distributel leads with 2 of 3 prefixes ahead of 1 others; in 613, Bell Canada leads with 1 of 2 prefixes ahead of 1 others; SaskTel is the only holder in 306; Fibernetics Corporation is the only holder in 474. No carrier holds prefixes in every one of Odessa’s 5 area codes, while 6 appear in just one.

Wireless and wireline

1 of Odessa’s 11 prefixes (9.1%) are held by carriers whose registered name marks a wireless business: SaskTel Mobility. Wireline prefixes still outnumber them, carried by Distributel, Fibernetics Corporation, Bell Canada and ISP Telecom Inc. This is a sort by name, not a licence lookup, and a mobile prefix may have been ported to another network since.

How the allocation was built up

Odessa’s dated assignments run from 2008 to 2026. The busiest period was 2015–2019, when 4 prefixes went to 2 carriers. 2 prefixes (18%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 4 prefixes have been added, so the rate centre is still growing.

Odessa’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada and SaskTel: these carriers made up the landscape before competition arrived. The first dated assignment went to TELUS Integrated Communications in 2008. The most recent arrivals are IXICA Communications Inc. (2026), Fibernetics Corporation (2022) and ISP Telecom Inc. (2021), a sign that new carriers are still asking for numbers in Odessa.

Odessa has only 11 prefixes, or 110,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Odessa: the leader, Distributel, holds only 27.3% of the prefixes against 7 competitors, a sign of a highly fragmented market where cable companies, mobility brands and VoIP providers weigh as much as the incumbent.

Demand remains steady: 44.4% of the dated prefixes go back to the last ten years, the most active period being 2015–2019. The rate centre is growing at a regular rather than explosive pace.

2 undated in the register.

Dialling a Odessa number

Odessa is served by 5 overlaid area codes (343, 639, 613, 306 and 474). A 474 number is no more “out of town” than a 343 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Odessa shares area codes 343, 639, 613, 306 and 474 with at least 20 other rate centres, including Ottawa-Hull, Regina, Saskatoon, Kingston, Moose Jaw, Belleville, Cornwall and Kanata-Stittsville. The largest of them, Ottawa-Hull, holds 425 prefixes in 343 and 613; the smallest on the list, Outlook, has just 17.

What a Odessa number tells you

A number attached to Odessa tells you that its prefix was issued to a carrier for this rate centre in Ontario, most often Distributel. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 8 carriers present here or to a VoIP service usable anywhere. Nor does it tell you who is calling: caller ID can be spoofed, and an Ontario area code is easy to borrow to look local.

Reading a register entry for Odessa: code 343-278 is recorded for Distributel, so every 343-278-XXXX number (10,000 possible) descends from that assignment. “Odessa, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Odessa prefix

Each row is an in-service central-office code recorded for Odessa, with its original holder and year of assignment.

Allocated prefixes

All 11 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario