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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  3. Tier 1 network - Wikipedia

    en.wikipedia.org/wiki/Tier_1_network

    A Tier 1 network is an Internet Protocol (IP) network that can reach every other network on the Internet solely via settlement-free interconnection (also known as settlement-free peering ). [1] [2] Tier 1 networks can exchange traffic with other Tier 1 networks without paying any fees for the exchange of traffic in either direction. [3]

  4. Internet in the United States - Wikipedia

    en.wikipedia.org/wiki/Internet_in_the_United_States

    The Internet in the United States grew out of the ARPANET, a network sponsored by the Advanced Research Projects Agency of the U.S. Department of Defense during the 1960s. The Internet in the United States in turn provided the foundation for the worldwide Internet of today. Internet connections in the United States are largely provided by the ...

  5. Internet outage - Wikipedia

    en.wikipedia.org/wiki/Internet_outage

    An Internet outage or Internet blackout or Internet shutdown is the complete or partial failure of the internet services. It can occur due to censorship, cyberattacks, disasters, [1] police or security services actions [2] or errors. Disruptions of submarine communications cables may cause blackouts or slowdowns to large areas.

  6. Net neutrality in the United States - Wikipedia

    en.wikipedia.org/wiki/Net_neutrality_in_the...

    The ideas underlying net neutrality have a long pedigree in telecommunications practice and regulation. Services such as telegrams and the phone network (officially, the public switched telephone network or PSTN) have been considered common carriers under U.S. law since the Mann–Elkins Act of 1910, which means that they have been akin to public utilities and expressly forbidden to give ...

  7. 2021 Facebook outage - Wikipedia

    en.wikipedia.org/wiki/2021_Facebook_outage

    2021 Facebook outage. Traffic volume for Facebook services on October 4, 2021 with a drop during the global outage. On October 4, 2021, at 15:39 UTC, the social network Facebook and its subsidiaries, Messenger, Instagram, WhatsApp, Mapillary, and Oculus, became globally unavailable for a period of six to seven hours.

  8. Internet backbone - Wikipedia

    en.wikipedia.org/wiki/Internet_backbone

    The Internet backbone may be defined by the principal data routes between large, strategically interconnected computer networks and core routers of the Internet. These data routes are hosted by commercial, government, academic and other high-capacity network centers, as well as the Internet exchange points and network access points, that ...

  9. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    In computer network communications, the HTTP 404, ... (like Internet Explorer) ... The substatus codes take the form of decimal numbers appended to the 404 status code.