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Proxy Returns HTTP 1.1 503 Service Unavailable

Proxy Returns HTTP 1.1 503 Service Unavailable. We’ve built our ISP proxies to slide under even the most discerning web application firewalls. Use our proxies for US gaming or streaming. Proxies can be used on Netflix, Hulu, Runescape, Diablo, WoW, Pokemon Go, and other popular online games.


$25 / month
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$100 / month
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$300 / month
Per IP (additional)
$1000 / month
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upon request / month
Per IP (additional)
upon request


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We independently own and operate all our ISP and residential proxies and circuits. We've built our own tech from the ground up.
Proxies are running on fast servers, residential circuits, in the most connected data-centers in the United States.
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We have over 2,500 returning customers from sneaker resellers, botters, and industry who trust our premium RESICENTER® proxy network for all their proxy needs.
USA ISP Proxies engineered for success on retail and sneaker sites
We’ve built our ISP proxies to slide under even the most discerning web application firewalls. How? We’ve combined consumer, residential connections with the speed of datacenter-deployed IPs. We call this technology RESICENTER®
, dedicated and static IPs
Our monthly subscriptions have no inherent bandwidth limitations and proxy IPs provided are dedicated to you and static.
Low-latency gaming and streaming
Use our proxies for US gaming or streaming. Proxies can be used on Netflix, Hulu, Runescape, Diablo, WoW, Pokemon Go, and other popular online games. Don’t see your targeted streaming site or game here? Contact us and we will help!

Today, many people use proxy servers for a safe and secure connection while browsing the Internet. For some, it's necessary since many websites are accessible from private IP addresses. However, for others, it's only a matter of choice to allow you to be sure that none of your personal information could be divulged away to third parties.

There are various kinds of proxies available today, but how can someone who is new to the world choose one? What is HTTP proxy, HTTPS proxy anonymous proxy or transparent?

Luckily for you, all of this information can be explained in the article below, so you can choose a suitable proxy server based exclusively on your requirements!

HTTP Proxy or HTTPS Proxy: What to Select?

The two major distinctions between different types proxies are HTTP and HTTP proxy, which is why it's essential for those who are not experts on the subject to be aware of them before beginning.

HTML0 In the next paragraphs, we'll detail the ways in which these two kinds of servers are different from one other so that you get a basic understanding of how a proxy servers functions.

HTTP Proxy

What exactly is proxy server for HTTP?

Proxy Returns HTTP 1.1 503 Service Unavailable in ProxyWoW

HTTP can be deciphered in the form of HyperText Transfer Protocol, and it acts as an intermediary between you, the client and the website is accessible to you.

This is what happens to your requests to visit a specific web site after your HTTP proxy server is in place:

  1. When a user sends a request to the site wishes to access (which usually happens by simply clicking the link) this web request doesn't go directly to the server of the site. Instead, it's sent to the HTTP proxy first.

  2. After the request is acknowledged at the HTTP proxy, it is analysed, and then the information from it is used to generate a second request, one that will be transmitted to the web server. This is to make it possible to disguise the IP address of your computer so that the web server cannot actually access your private details;

  3. When an HTTP proxy server sends your HTTP message to the web server, it's processed by it by the server at the destination in order that the response to the client will be constructed;

  4. After that you will receive an response through the web server. This is either permitting you to connect to the site you're trying to access or denying you to access it.

After all of these actions are recorded in a way, it could appear there's lots to be done by the client as well as the HTTP proxy servers for the requests to be sent. If a proxy server of high-quality like ProxyWOW is used the entire process will require milliseconds to complete.


After you have a better understanding of how HTTP proxy servers work, you may be thinking, why do there be a need for another type of proxy server?

Proxy Returns HTTP 1.1 503 Service Unavailable - in ProxyWoW

  • HTML0 Well, the HTTP protocol for getting an answer from the target website isn't the solution for every situation, which is why"https proxy" HTTPS proxy server was established for the purpose of repairing its shortcomings.

  • HTTP traffic requests are transmitted by the server on this website in the form of plain text, which means the security is not the best in that a lot of your sensitive data, like passwords or credit card numbers could be easily seen by any person, and we do not want this to happen through the proxy.

  • HTTPS proxy utilizes an updated HTTPS protocol that protects data using CONNECT to ensure that only any remote servers of an HTTPS website can read all the information contained in the requests which the client transmits.

  • There exist two types of protocols that could be used for An HTTPS proxy to create an so-called TCP connection between servers and clients within the network. They are Secure Sockets Layer (or SSL) and Transport Layer Security (TLS).

SSL and HTTP Proxies Benefits and Cons

HTML0 As an HTTP user, you are able to utilize an HTTP proxy provider for these activities:

  • Video watching and listening to music;

  • Collecting data;

  • Exploring online shops;

  • The reading of informative articles do not require a permit.

as an HTTPS client The following list of actions could be made through HTTPS connectivity:

  • What was in the list above

  • You can purchase any product online by filling in your bank information;

  • Entering your social media accounts that require authorization.

The negatives of using an HTTP client As you might suppose, is the fact that security of the HTTP client isn't the best one, and you're unable to fill in any of your personal details when applying the HTTP proxy. In terms of the drawbacks to conducting an HTTPS application, we can tell you that our personal experience shows that the one disadvantage is being aware that it may cost more to buy an HTTPS web proxy to make HTTPS requests.

Why ProxyWOW?

Now that you are aware about two major types of proxy servers in use these days, go ahead by selecting a proxy to buy.

You might want to begin your search by looking at ProxyWOW as an alternative proxy server to use. Here are some reasons for this:

  • A proxy server with a fee guarantees that the speed of all of your connections are stable and quick. For you, ProxyWOW is one of the proxy servers that can provide you with the highest degree of security and rapid lighting connectivity on any operating system or browser;

  • HTML0 Since you're using a proxy server paid-for which isn't accessible to all other users in the world, you could ensure that all your personal information would be protected by ProxyWOW especially when using the most recent version of proxy for HTTPS traffic;

  • This and all our elite proxy servers are residential that are not data center ones which means that the browser can't track your IP addresses or block you from connecting to any website as it would perceive you to be a regular client, not one that utilizes IP addresses from data servers.

Furthermore, buying proxy servers at ProxyWOW adds that you'll have the opportunity to connect with our customer services 24/7. In the event of any issue that happens with your proxy you'll have the option of fixing it in a matter of minutes, so be sure to look over our pricing as soon as possible!