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  2. Comparison of cross-platform instant messaging clients

    en.wikipedia.org/wiki/Comparison_of_cross...

    Discord: Email or Phone number Yes No No No No Element: No Yes Yes: No Yes Yes Fractal: No No Yes Yes Gadu-Gadu: Email and Phone number No No Gajim: Email Yes No Yes Google Chat: Email; Google account Yes Google Messages (RCS) Phone number Similar to SMS requirements, RCS messaging requires a valid SIM card to be inserted in the device.

  3. Telephone numbers in the Netherlands - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    Previously, 06-0, 06-1000 and 06-4 were used for toll-free numbers, 06-8 for shared cost, 06-9 for premium rate, and other 06-numbers for mobile numbers. 0011 and later 06-11 was used for emergency services before this changed to 112. 09 was used as the international access code before this changed to 00. Geographical telephone numbers

  4. Telephone numbers in North Korea - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_North...

    Overseas callers to North Korea will usually need to go through the international operator service on +850 2 18111. A select few numbers (mostly fax numbers) are able to be dialled directly, without operator assistance. Phone numbers in Pyongyang which can call internationally and which can receive calls internationally always begin with 381 in ...

  5. Snowflake ID - Wikipedia

    en.wikipedia.org/wiki/Snowflake_ID

    Discord also uses snowflakes, with their epoch set to the first second of the year 2015. Instagram uses a modified version of the format, with 41 bits for a timestamp, 13 bits for a shard ID, and 10 bits for a sequence number. Mastodon's modified format has 48 bits for a millisecond-level timestamp, as it uses the UNIX epoch. The remaining 16 ...

  6. Telephone number verification - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_verification

    Telephone number verification. Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem, fax, voice mMail or answering machine .

  7. Lavarand - Wikipedia

    en.wikipedia.org/wiki/Lavarand

    Lavarand, also known as the Wall of Entropy, was a hardware random number generator designed by Silicon Graphics that worked by taking pictures of the patterns made by the floating material in lava lamps, extracting random data from the pictures, and using the result to seed a pseudorandom number generator. [1]

  8. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    Landline numbers in Taiwan are written with the area code in parentheses [with phone numbers total nine digits] Example: (02) XXXX YYYY for phone numbers in Taipei area. Mobile phones have 3 digit "company code" assigned to different mobile service carriers such as (09**) XXXXXX followed by a 6 digit phone number.

  9. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    357 – Cyprus (including Akrotiri and Dhekelia) 358 – Finland. 358 (18) – Åland. 359 – Bulgaria. 36 – Hungary (formerly assigned to Turkey, now at 90) 37 – formerly assigned to East Germany until its reunification with West Germany, now part of 49 Germany.