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Clarify ISP proxies provide a static IP across sessions #386

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Clarify ISP proxies provide a static IP across sessions #386

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4 changes: 2 additions & 2 deletions proxies/isp.mdx
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Expand Up @@ -6,9 +6,9 @@ ISP (Internet Service Provider) proxies are hosted on datacenter infrastructure

## IP Rotation Behavior

ISP proxies provide a **stable exit IP within a single browser session** — every tab, request, and reconnection inside that session exits through the same IP, and it does not rotate mid-session (unlike residential).
ISP proxies provide a **static exit IP that persists across sessions** — every tab, request, reconnection, and future browser session attached to this proxy exits through the same IP. The IP only changes in rare ISP-initiated replacement events (a few times per year on a small number of subnets).

For cross-session IP stability (e.g. IP allowlists or [managed auth](/auth/overview) health checks), see [IP rotation behavior across proxy types](/proxies/overview).
This makes ISP proxies suitable for use cases that require a stable IP, such as IP allowlists or [managed auth](/auth/overview) health checks. For comparison with other proxy types, see [IP rotation behavior across proxy types](/proxies/overview).

## Configuration

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4 changes: 3 additions & 1 deletion proxies/overview.mdx
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Expand Up @@ -16,7 +16,9 @@ Kernel supports four types of proxies:
Datacenter has the fastest speed, while residential is least detectable. ISP is a balance between the two options, with less-flexible geotargeting. Kernel recommends to use the first option in the list that works for your use case.

<Info>
Datacenter and ISP proxies provide a **stable exit IP within a single browser session** — the IP does not rotate mid-session. Across separate sessions, however, Kernel does not guarantee the same exit IP. If you need a truly static IP that persists across every session (for example, an IP allowlist or a [managed auth](/auth/overview) connection whose health checks must egress from a single IP), use a [custom (BYO) proxy](/proxies/custom) pointed at infrastructure you control.
ISP proxies provide a **static exit IP that persists across sessions** — every browser session attached to the proxy exits through the same IP, and it only changes in rare ISP-initiated replacement events. This makes them suitable for IP allowlists or [managed auth](/auth/overview) health checks that must egress from a single IP.

Datacenter proxies provide a **stable exit IP within a single browser session** — the IP does not rotate mid-session, but Kernel does not guarantee the same exit IP across separate sessions. For cross-session stability without using an ISP proxy, use a [custom (BYO) proxy](/proxies/custom) pointed at infrastructure you control.

Residential proxies use **rotating exit IPs** that may change per connection — see [Residential Proxies](/proxies/residential#ip-rotation-behavior) for details.
</Info>
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