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v3.25.1

Geographic and segment information: (Tables) | 3 Months Ended
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Mar. 31, 2025
Geographic and segment information: |
Schedule of service revenues and long-lived assets by geographic region | Revenues are attributed to regions based on where the services are provided. Below are the Company’s service revenues and long-lived assets by geographic region - including property plant and equipment and excluding intangible assets (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three Months Ended March 31, 2025 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Revenues |  | On-net IP |  | Off-net IP |  | Wavelength |  | Non-core |  | Total
North America | ​ | $ | 99,080 | ​ | $ | 101,020 | ​ | $ | 6,891 | ​ | $ | 2,939 | ​ | $ | 209,930
Europe | ​ |  | 23,769 | ​ | ​ | 4,962 | ​ | ​ | 216 | ​ | ​ | 52 | ​ | ​ | 28,999
South America | ​ | ​ | 1,763 | ​ | ​ | 208 | ​ | ​ | — | ​ | ​ | 8 | ​ | ​ | 1,979
Oceania | ​ | ​ | 4,904 | ​ | ​ | 1,058 | ​ | ​ | 12 | ​ | ​ | 28 | ​ | ​ | 6,002
Africa | ​ | ​ | 112 | ​ | ​ | 26 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 138
Total | ​ | $ | 129,628 | ​ | $ | 107,274 | ​ | $ | 7,119 | ​ | $ | 3,027 | ​ | $ | 247,048
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three Months Ended March 31, 2024 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Revenues |  | On-net IP |  | Off-net IP |  | Wavelengths |  | Non-core |  | Total
North America | ​ | $ | 108,694 | ​ | $ | 111,019 | ​ | $ | 3,327 | ​ | $ | 5,879 | ​ | $ | 228,919
Europe | ​ | ​ | 23,641 | ​ | ​ | 5,339 | ​ | ​ | — | ​ | ​ | 121 | ​ | ​ | 29,101
Oceania | ​ | ​ | 4,380 | ​ | ​ | 1,561 | ​ | ​ | — | ​ | ​ | 30 | ​ | ​ | 5,971
South America | ​ | ​ | 1,748 | ​ | ​ | 235 | ​ | ​ | — | ​ | ​ | 9 | ​ | ​ | 1,992
Africa | ​ | ​ | 161 | ​ | ​ | 24 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 185
Total | ​ | $ | 138,624 | ​ | $ | 118,178 | ​ | $ | 3,327 | ​ | $ | 6,039 | ​ | $ | 266,168
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​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2025 |  | 2024
Long-lived assets, net | ​ | ​ | ​ | ​ | ​ | ​
North America | ​ | $ | 2,058,310 | ​ | $ | 1,579,495
Europe and other | ​ |  | 168,942 | ​ | ​ | 158,854
Total | ​ | $ | 2,227,252 | ​ | $ | 1,738,349

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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