HTTP Headers

Show the HTTP headers for a URL, with a full break-down of details. Will follow redirects.

Summary

Response
200
Total Requests
1
Total Time
439 ms

  • https://marktwainonline.com/

    Status
    200
    Message
    OK
    Time
    439 ms
  • IP
    104.21.80.1
    View Map

  • Timing

    Wait

    0 ms

    DNS

    10 ms

    TCP

    2 ms

    Request

    0 ms

    First Byte

    421 ms

    Download

    0 ms

    Total

    439 ms

  • HTTP Headers

    Date

    Wed, 22 Jan 2025 08:01:42 GMT

    The date and time that the message was sent.

    Content-Type

    text/html

    The MIME type of this content.

    • Type

      text/html

    • Description

      HTML file

    Connection

    close

    Control options for the current connection and list of hop-by-hop response fields.

    close - The client or server would like to close the connection.

    Set-Cookie

    srv=cdf6ea9482eb9908ad31aff4c8bea221; Path=/

    A cookie sent from the server to be set on the client

    • srv

      cdf6ea9482eb9908ad31aff4c8bea221

      Cookie name and value.

    • Path

      /

      The client will only send the cookie when requesting this path, or subdirectories, from the server.

    Vary

    Accept-Encoding

    Indicates that different content may be provided to different clients, depending on the vary header.

    • Headers

      • Accept-Encoding
    X-Powered-By

    ASP.NET

    The software powering this site.

    Strict-Transport-Security

    max-age=0; includeSubDomains

    A HSTS Policy informing the HTTP client how long to cache the HTTPS only policy and whether this applies to subdomains.

    • Max-Age

      0

      The time a browser should remember a site can only be accessed with https (seconds).

    • includesubdomains

      max-age applies to subdomains as well.

    Merchantid

    024

    Cf-Cache-Status

    DYNAMIC

    Encoded information about your request from Cloudflare.

    DYNAMIC - This is not cached by default.

    Report-To

    {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=gulSpNJNtC49otpF06boVqh03ySJWGUrC2NWl9kk09%2Bn9cddV7klxkEOPZo6qzt1RHBF5gMXciw%2FquRFXMxqsJa4HpxPFtwD6EYCeFsmc7QrNKJUoTXbNZNSRZM1anIvUe4h4oNZ"}],"group":"cf-nel","max_age":604800}

    Report to.

    • Endpoints

      • {"url":"https://a.nel.cloudflare.com/report/v4?s=gulSpNJNtC49otpF06boVqh03ySJWGUrC2NWl9kk09%2Bn9cddV7klxkEOPZo6qzt1RHBF5gMXciw%2FquRFXMxqsJa4HpxPFtwD6EYCeFsmc7QrNKJUoTXbNZNSRZM1anIvUe4h4oNZ"}

    • Group

      cf-nel

    • Max_age

      604800

    Nel

    {"success_fraction":0,"report_to":"cf-nel","max_age":604800}

    Configure network request logging.

    • Success_fraction

      0

    • Report_to

      cf-nel

    • Max_age

      604800

    Server

    cloudflare

    A name for the server.

    cloudflare - Description of the server software.

    Cf-Ray

    905e047e8b1d5e82-EWR

    Encoded information about your request from Cloudflare.

    Alt-Svc

    h3=":443"; ma=86400

    Indicate a resource should be loaded from a different server while still appearing to be loaded from this server.

    • Service

      • h3 - :443

    • Service

      • ma - 86400 (1 day)

        Max age for the alternative (seconds).

    Server-Timing

    cfL4;desc="?proto=TCP&rtt=1327&min_rtt=1098&rtt_var=575&sent=4&recv=5&lost=0&retrans=0&sent_bytes=2851&recv_bytes=699&delivery_rate=2637522&cwnd=251&unsent_bytes=0&cid=5ee72df62376eb04&ts=425&x=0"

    Server metrics for the request.

    • Cfl4