ISP proxies

ISP proxies are static residential IPs sourced from ISP-owned subnets — they look residential to target sites but are hosted on premium datacenter infrastructure, so they're fast like datacenter and trusted like residential.

Unlike Residential and Mobile, ISP proxies are not delivered through a gateway. After purchase, you get a list of static IPs that you address directly.

At a glance

Delivery model	Per-IP list, ip:port:user:pass
Billing	Per IP, per month
Pool size	The IPs you purchased — fixed, dedicated to your account
IP stability	Permanent — same IP across reboots, weeks, months
Geo targeting	Country (and city in select markets) — chosen at order time, not per request
Rotation	Client-side — you pick the next IP from your list
Speed	High (1 Gbps+ per IP)
Protocols	HTTP, HTTPS, SOCKS5
Authentication	User+password (per-IP credentials) or IP whitelist
KYC required	Not by default (may be requested based on risk)

Credential format

Each IP in your list is delivered in the standard four-tuple:

ip:port:user:pass

Example:

198.51.100.42:8000:helo_s1a2b3c4d5e:PASSWORD
198.51.100.43:8000:helo_s1a2b3c4d5e:PASSWORD
198.51.100.44:8000:helo_s1a2b3c4d5e:PASSWORD

Same user/password across the whole batch you ordered — the IP+port pair is what distinguishes them. Full reference: Proxy list format.

The helo_ prefix in the username is not the gateway grammar — ISP usernames carry no -type- / -region- segments. They are just user identifiers.

When to use ISP

• Account-bound workflows — login flows where the site binds anti-bot signals to IP for hours/days
• Sneaker / drop / ticket purchases — speed + residential reputation
• Long-running monitors — checkers that must stay on the same IP for stability
• High-bandwidth scraping where residential per-GB billing gets expensive
• Geo-locked services where IP and city must remain consistent

If you need to rotate IPs aggressively per request, residential is a better fit. ISP shines when stability is the requirement.

Five-second example

curl -x http://helo_s1a2b3c4d5e:PASSWORD@198.51.100.42:8000 \
     https://ipv4.icanhazip.com

(Substitute one of the IPs from your list.)

On this page

• Quick start — order, download list, first request
• Proxy list format — the four-tuple in detail
• Authentication — password vs IP whitelist
• Locations — country and city coverage at order time
• Protocols — HTTP / HTTPS / SOCKS5
• Client-side rotation — patterns for picking the next IP
• IP management — replace dead IPs, refresh batches
• Error definitions — what each status code means
• Statistics — per-IP usage and the API