How do I rotate a mobile proxy IP?

What happens when a mobile proxy IP rotates?

When a mobile proxy IP rotates, the modem drops its data session and attaches to the carrier network again. The carrier then hands the port a public address from its pool.

Rotating a mobile proxy IP means reconnecting its 4G/5G modem to the carrier, which then assigns the port a new public address from its pool.

Carriers run carrier-grade NAT, using the 100.64.0.0/10 block that RFC 6598 set aside for the subscriber side. Many subscribers share each public address. The carrier, not you, decides which address comes next. A rotation keeps the same modem, SIM and carrier; only the public IP changes. The basics are in what a mobile proxy is.

How do I change the IP with the rotation link or the API?

You rotate by sending a GET request to your port's link, https://fiftystateproxy.com/api/v1/mobile/{port}/rotate?key=API_KEY, with your port ID and API key filled in. The JSON reply holds the new IP (ip), the previous one (previousIp) and the next allowed time (nextRotationAvailableAt). A call made too soon gets HTTP 429 and a Retry-After header.

One rotation every 30 seconds means up to 120 rotation calls an hour on a single port. Treat the link like a password: anyone who holds it can rotate your port.

# Rotate port PORT and print the JSON reply:
# new IP, previous IP and the next time a rotation is allowed
curl -s "https://fiftystateproxy.com/api/v1/mobile/PORT/rotate?key=API_KEY"

# Check the exit IP through the port
# (HOST, PROXY_PORT, USERNAME and PASSWORD come from the port in your dashboard)
curl -x http://USERNAME:PASSWORD@HOST:PROXY_PORT "https://api.ipify.org?format=json"

# pip install requests
import time
import requests

ROTATE_URL = "https://fiftystateproxy.com/api/v1/mobile/PORT/rotate?key=API_KEY"
PROXY = "http://USERNAME:PASSWORD@HOST:PROXY_PORT"  # values from your port's page

def exit_ip():
    r = requests.get("https://api.ipify.org?format=json",
                     proxies={"http": PROXY, "https": PROXY}, timeout=30)
    return r.json()["ip"]

before = exit_ip()
resp = requests.get(ROTATE_URL, timeout=60)
if resp.status_code == 429:
    wait = int(resp.headers.get("Retry-After", "30"))
    print(f"Too soon: wait {wait} s before the next rotation")
else:
    resp.raise_for_status()
    time.sleep(15)  # the reconnect usually takes 5-15 s
    after = exit_ip()
    print(before, "->", after)
    if after == before:
        print("The carrier returned the same IP: rotate again after 30 s")

How do I set an automatic rotation timer?

You set the timer in the dashboard. On 7-day and 30-day ports, FiftyStateProxy rotates the IP for you every 2 minutes to every 24 hours, as you choose. At the 2-minute setting, a port changes IP up to 720 times a day; at the 24-hour setting, once. One-day ports rotate by link or API only. Without a timer, the port keeps its IP until you rotate it, although the carrier occasionally reassigns the address by itself.

Sticky or rotating: how often should I change the mobile IP?

Change the IP between independent tasks, never in the middle of one. A login, a checkout test or an account session expects one IP from start to finish.

• One stable IP per account: agencies that manage client accounts keep the port's IP for the whole session and follow each platform's rules. See the best US proxies for social media management.
• Fresh IP per batch: ad checks and price checks rotate between batches of pages. See which US proxies suit ad verification.
• Steady monitoring: a timer of 30 to 60 minutes spreads requests over several carrier IPs.

Pacing matters as much as rotation: Cloudflare found CGNAT addresses are rate-limited about three times as often as other addresses. Rotating mobile traffic billed per GB works differently. It draws from a shared pool, per connection or with sticky sessions, from $1.50/GB. The rotation link and the timer belong to dedicated ports, listed with both mobile products on US mobile proxies on T-Mobile, AT&T and Verizon.

Why did I get the same IP after rotating?

You got the same IP because the carrier picked it again from its pool; the rotation itself worked. Carriers assign addresses from shared pools, and a recent address can come back. Wait out the 30-second limit and rotate again. If the IP stays the same across several tries, write to support with your port ID and the times of your calls.