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2. List of Pennsylvania area codes - Wikipedia

   en.wikipedia.org/.../List_of_Pennsylvania_area_codes

   This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each. Since 1995, several relief actions in form of area code splits and overlays have expanded the list of area

3. International Maritime Dangerous Goods Code - Wikipedia

   en.wikipedia.org/wiki/International_Maritime...

   Shipping/Ferry; Cargo; Freight; ... IMDG Code in the calendar year 2023 is either the 2020 Edition; Incorporating Amendment 40-20 or the 2022 Edition; Incorporating ...

4. List of Minnesota area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Minnesota_area_codes

   Original numbering plan areas and area codes of Minnesota in 1952. When the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan for Operator Toll Dialing in 1947 to automate and speed the connection of long-distance calls, the United States and Canada were divided into 86 geographic numbering plan areas (NPAs) and assigned the original North ...

5. List of airline codes (C) - Wikipedia

   en.wikipedia.org/wiki/List_of_airline_codes_(C)

   This is a list of all airline codes. The table lists the IATA airline designators , the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.

6. List of TCP and UDP port numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

   This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist.

7. List of Arizona area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Arizona_area_codes

   602 was the original area code for Arizona, and was split in 1995 into 602, serving metropolitan Phoenix, and 520, serving the remainder of the state. [1] In 1999, 602 was split into 480, 602, and 623, [2] which were recombined in 2023. [3] 520 was split in 2001 to form area code 928. [4]