Proxy Types Explained: Datacenter vs Residential vs Mobile (4G/5G) — Which One Do You Need?

What does a proxy change, and what doesn't it? #

A proxy is an intermediary. Your traffic goes to the proxy first, and the proxy talks to the website for you, so the website sees the proxy's IP address instead of yours. MDN describes this "forward proxy" role and notes that it can hide the client's address.

Two things follow from that:

• It changes the IP address, and only that. Cookies, logins, browser settings and device details stay the same. That is why people who run several accounts pair each proxy with its own browser profile.
• The kind of IP matters. Public registries record which organisation owns an IP range, so a website can tell whether an address belongs to a hosting company, a home internet provider or a mobile carrier. The three proxy types below are named after that owner.

The three proxy types at a glance #

Datacenter proxies #

What they are: addresses from servers in data centres, rented from hosting or cloud companies.

Good for: speed, large downloads, public-data tasks where the target doesn't restrict server ranges, and checking how a page loads from another country.

Watch out for: ranges that are publicly attributable to hosting companies, so some websites apply stricter checks to them. On cheap shared pools, your neighbours' behaviour affects the reputation of the address. Ask whether the IP is dedicated (only you) or shared.

Residential proxies #

What they are: addresses that an internet provider assigned to a home connection. Providers get them in different ways: through arrangements with internet providers (often sold as "static residential" or "ISP" proxies), or through large pools of real users' connections (usually rotating) that are recruited in ways that vary in how openly users are told.

Good for: localisation and ad-placement checks, price comparison across regions, and a stable regional presence for accounts you operate.

Watch out for: price (many plans bill per gigabyte), uneven speed, and sourcing. Prefer providers that explain how the people behind each address agreed to take part.

Where the addresses come from matters. Cloudflare reports that residential proxy IPs are most commonly sourced by partnering with free VPN providers and by embedding proxy SDKs in popular browser extensions and mobile apps. In January 2026, Google's threat-intelligence team described a large residential proxy network that recruited devices through SDKs and apps with very little transparency for the device owner. Choose providers that can explain how people agreed to take part, or use addresses from SIM cards you own.

ISP proxies are a hybrid: the address is registered to an internet provider but hosted in a data centre, so it is usually static and fast. They are often sold as "static residential".

Residential isn't invisible. Cloudflare has described detecting residential proxy traffic from signals such as network latency and behaviour, so no proxy type guarantees that a website won't notice it.

Mobile (4G/5G) proxies #

What they are: addresses from a mobile carrier's network, reached through a real SIM card and modem.

The key fact: carriers commonly put many subscribers behind one public IPv4 address. RFC 6888 defines carrier-grade NAT as a function used to share the same IPv4 address among several subscribers. So one mobile IP is a weak identifier for one person, which shapes how some websites treat it. It is not a guarantee of any particular outcome.

Good for: testing how a website or app behaves on a carrier network, and checking the mobile experience in a given region.

Watch out for: the highest price, bandwidth limits, speeds that change with signal, and rotation that depends on the carrier: a new IP comes from reconnecting the modem, and you don't fully control which address you get. A shared address also cuts both ways: one user's behaviour can affect the reputation of an address many people use, and blocking a shared address can catch innocent users too. If you have a spare USB modem, you can make your own.

Static (sticky) vs rotating #

• Static or sticky: the same IP for hours or days. Use it for logins and anything that expects continuity.
• Rotating: the IP changes on every request or on a timer. Use it for large volumes of independent public requests.

Rule of thumb: one account or profile gets one stable IP. Rotate only where each request stands alone.

HTTP vs SOCKS5 #

Pick whichever your provider offers and your tool supports. The type of IP matters far more than the protocol.

Proxy string cheat sheet #

Providers write the same proxy in a few formats. Here is how to read them:

host:port
host:port:username:password
username:password@host:port
socks5://username:password@host:port
http://username:password@host:port

host is the proxy's address, port is the number to connect to, and username and password appear only when the proxy needs a login.

Which type for which job #

Seven mistakes to avoid #

1. Rotating the IP during a logged-in session. The account appears to jump between places.
2. Sharing one IP across unrelated accounts. One problem then touches all of them.
3. Ignoring location consistency. The profile's language, timezone and country should match the IP's region.
4. Using free public proxies. You don't know who runs them.
5. Buying on price alone. Ask whether the IP is dedicated or shared, how fresh it is, and whether there is a trial or refund.
6. Skipping the leak test. DNS or WebRTC leaks can show your real address.
7. Forgetting the rules. A proxy doesn't change a website's terms of service or the law that applies to you.

Test a proxy in five minutes #

1. IP and location. Open an IP lookup page through the proxy and confirm the country and city.
2. Owner type. The lookup shows who owns the address. Check that it is a hosting company, a home provider or a carrier, as the type you paid for.
3. Speed. Note the latency and a download speed test.
4. Leaks. With the proxy on, confirm that DNS and WebRTC tests don't show your real IP.
5. Stability. Keep it running for 30 to 60 minutes. A static IP should stay put; a rotating IP should change as promised.

Using proxies with ADSSPEED #

• One proxy per profile. Each browser profile and each Android phone profile has its own proxy setting, HTTP or SOCKS5, so changing one doesn't touch the others.
• Bulk assignment. Select many profiles and assign proxies in one step, instead of editing profiles one by one.
• Your own mobile proxies. Plug a 3G/4G USB modem (Dcom) into the PC and the Dcom › Proxy page turns it into an HTTP and SOCKS5 proxy with its own port. Rotate the IP on command or on a timer, and copy the proxy as host:port or host:port:user:pass.

The addresses come from your own SIM cards, so you are not renting them from a third party.