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Geographic information: (Tables)
12 Months Ended
Dec. 31, 2021
Geographic information:  
Schedule of service revenue by geographic region and product class and long lived assets by geographic region

Year Ended December 31, 2021

    

On-net

    

Off-net

    

Non-core

    

Total

North America

$

340,107

$

127,383

$

502

$

467,992

Europe

87,929

17,729

72

105,730

Asia Pacific

 

10,197

1,094

1

11,292

South America

4,102

173

1

4,276

Africa

503

4

507

Total

$

442,838

$

146,383

$

576

$

589,797

Year Ended December 31, 2020

    

On-net

    

Off-net

    

Non-core

    

Total

North America

$

330,924

$

129,879

$

474

$

461,277

Europe

 

79,568

17,252

47

96,867

Asia Pacific

 

6,834

949

7,783

South America

2,056

48

2,104

Africa

72

72

Total

$

419,454

$

148,128

$

521

$

568,103

Year Ended December 31, 2019

    

On-net

    

Off-net

    

Non-core

    

Total

North America

$

319,330

$

131,815

$

422

$

451,567

Europe

 

72,320

16,323

53

88,696

Asia Pacific

 

4,615

778

5,393

South America

488

15

503

Total

$

396,753

$

148,931

$

475

$

546,159

December 31, 

December 31, 

    

2021

    

2020

Long lived assets, net

North America

$

331,537

$

306,652

Europe and other

 

126,355

123,699

Total

$

457,892

$

430,351