http://www.bing.com:80/search?q=Ffff+Color+CodeSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Ffff+Color+CodeCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://stackoverflow.com/questions/76297723/what-is-ffff-in-the-returned-ip-addressWhat is '::ffff:` in the returned IP address? Asked 2 years, 11 months ago Modified 1 year, 5 months ago Viewed 1k timesFri, 17 Apr 2026 12:23:00 GMThttps://stackoverflow.com/questions/17891630/hexadecimal-converting-back-into-decimal1) Is FFFF a mix of both hexadecimal and decimal notation? How does FFFF equals 2^16? I don't understand how to interpret FFFF. The right most F represents 8 4 2 1, the second most F represents 128 64 32 16, the third most F represents 2048 1024 512 256 the the left most F represents 32768 16834 8192 4096?Fri, 17 Apr 2026 02:07:00 GMThttps://stackoverflow.com/questions/5861107/when-is-the-hybrid-ip-notation-ffff192-168-1-4-appropriateWhen is the hybrid IP notation ::ffff:192.168.1.4 appropriate? Asked 14 years, 11 months ago Modified 11 years, 2 months ago Viewed 25k timesSun, 12 Apr 2026 09:01:00 GMThttps://stackoverflow.com/questions/4825015/ffffff-or-white-in-cssIs there a difference between #FFF (#FFFFFF) and white in CSS? Is one better than the other?Wed, 15 Apr 2026 21:37:00 GMThttps://stackoverflow.com/questions/31100703/stripping-ffff-prefix-from-request-connection-remoteaddress-nodejsThe example address ::ffff:192.168.1.10 is legitimate! The question isn't whether the IPv6 address is legitimate; it's whether you can get a legitimate IPv4 address by stripping off the ::ffff:. And if your OS is automatically generating the IPv6 address from an IPv4 address, then the answer to that question is yes.Fri, 10 Apr 2026 19:48:00 GMThttps://stackoverflow.com/questions/29411551/express-js-req-ip-is-returning-ffff127-0-0-1The problem is the IP is returning ::ffff:127.0.0.1 instead of 127.0.0.1. I tried using trusted proxy option (though not using a proxy) and the req.ips is blank.Tue, 14 Apr 2026 07:47:00 GMThttps://stackoverflow.com/questions/2899197/does-style-color-fff-render-as-f0f0f0-or-ffffffI always kinda assumed it expanded to #ffffff and never really questioned it... good question.Fri, 17 Apr 2026 21:13:00 GMThttps://stackoverflow.com/questions/74918356/regex-pattern-for-ipv6-netmask-from-for-a-given-prefix-1-128I'm trying to write a regex for accepting IPv6 subnet from 8000:: to ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff. The subnet is based on the prefix range between /1 - 128 Example list of valid netmask ...Sat, 18 Apr 2026 07:00:00 GMThttps://stackoverflow.com/questions/46231247/what-does-ffff-stand-for-in-this-datetime-format-ddd-d-mmm-yyyy-hhmmss-ffffSomeDateTimeObject.ToUniversalTime() .ToString("ddd, d MMM yyyy HH:mm:ss +ffff", CultureInfo.InvariantCulture), Now I am confused what +ffff stands for in this. Also, I would like to get the millisecond part of the datetime along with hours/minutes and seconds. what is the format for that?Sat, 18 Apr 2026 03:11:00 GMThttps://stackoverflow.com/questions/59355190/whats-different-in-1-and-ffff127-0-0-1::ffff:127.0.0.1 is the IPv4 loopback address, written as an IPv6 address Apparently your software uses IPv6 sockets internally, so both IPv4 and IPv6 are handled with the IPv6 implementation.Mon, 23 Mar 2026 11:20:00 GMT