The difference is who owns the IP address
Every IP address is registered to an organisation, grouped into an autonomous system (ASN). A residential IP belongs to a consumer internet provider — Comcast, Deutsche Telekom, Jio — and is assigned to a household connection. A datacenter IP belongs to a hosting company or cloud provider and sits on a server in a rack.
Websites can look up that ownership instantly. Many anti-bot systems treat traffic from hosting ASNs with suspicion, because real shoppers, readers and searchers rarely browse from a server. Traffic from a consumer ISP looks like the audience the site was built for.
Side by side
| Residential | Datacenter | |
|---|---|---|
| Where the IP comes from | ResidentialA consumer ISP, assigned to a home | DatacenterA hosting or cloud provider |
| How sites see it | ResidentialAn ordinary visitor | DatacenterA server — easy to identify |
| Block rate on protected sites | ResidentialLow | DatacenterHigh |
| Speed and latency | ResidentialVaries with the home connection | DatacenterFast and consistent |
| Usual billing | ResidentialPer GB of traffic | DatacenterPer IP, per day or per GB |
| Cost per GB | ResidentialHigher | DatacenterMuch lower |
| Geo-targeting | ResidentialDown to city or ISP | DatacenterUsually country or region |
| Best for | ResidentialProtected sites, local results, accounts | DatacenterOpen sites, APIs, high-volume crawling |
When datacenter proxies are the right choice
If a target doesn't block hosting ranges, datacenter proxies are simply better value: higher throughput, lower latency and a price that doesn't grow with every gigabyte. Typical fits are public APIs, documentation and news sites, your own sites, and large crawls of targets with little bot protection.
SerpProxies' datacenter IPs come from subnets we own and route ourselves, with DNS cached at the edge, billed per day by line speed with unmetered bandwidth — so cost is predictable however much a crawler downloads.
When you need residential proxies
Move to residential once a target starts challenging or blocking your requests, or when the answer depends on where the visitor is. Search results, retail prices and ad delivery all change by location, and a residential IP in the right city sees what a local user sees.
- Sites behind serious bot protection: large retailers, ticketing, social platforms, search engines.
- Local data: rankings, prices or ads in a specific city.
- Accounts and sessions that must look like one real person over time.
Residential proxies are billed per gigabyte because each byte travels over someone's home connection. SerpProxies' residential pool is 50M+ consented, opt-in IPs across 195+ countries, with country, state, city and ASN targeting included on every plan.
A practical routing rule
Most teams don't choose one type for everything. Send each target through the cheapest proxy that works on it: start on datacenter, measure the block rate, and promote only the targets that fail to residential — and to premium residential or mobile if those fail too. Static ISP proxies sit in between: residential-registered addresses hosted in datacenters, for jobs that need a fixed identity at datacenter speed.
