Dolphin {anty} proxy setup
Add a Proxy302 proxy in Dolphin {anty}: click New proxy in a profile, pick the protocol, paste one line and check it with the arrows.
Dolphin Anty Proxy Not Working: Fix the Connection Error in Order
A checklist and symptom table for proxy errors in Dolphin{anty}, based on its help center.
What Dolphin{anty} shows when a proxy fails
Dolphin{anty}'s help center describes three places where a failed proxy check appears: the profile will not start and a red exclamation mark with "Error checking connection to proxy" appears near the "Start" button, red arrows appear on the profiles screen, or a red "Error" status appears on the proxy screen.
You add a proxy in the profile form by choosing "New proxy," or on the "Proxy" screen with "Add Proxy." After you enter the proxy, click the arrows at the right edge of the line. According to the help center, this checks the connection, the geolocation and the time zone. Saved proxies carry a status of "Working" or "Unknown," where "Unknown" simply means not yet verified.
Fix it in order
Re-copy the proxy from your provider
Dolphin{anty} accepts host:port, host:port:login:password and login:password@host:port. An optional name can follow at the end. Extra spaces, extra symbols or a typo are the first things the help center tells you to rule out. Copy with the copy button instead of retyping.
Check the protocol prefix and the port
The help center shows http, socks5 and socks4 as the type prefix placed before the proxy string. The prefix and the port must belong together, so they must match how the proxy was generated. The values for Proxy302 are in the gateway section below.
Click the arrows again and read the result
A fresh check after each change tells you which change helped. A red "Error" or red arrows means Dolphin{anty} could not confirm the proxy.
Switch networks
The help center lists your internet provider blocking the connection to the proxy server as a possible cause. Try another Wi-Fi network or a phone hotspot. If the same proxy works for a colleague but not for you, this is the first thing it points to.
Test the proxy in another tool on the same connection
If it works elsewhere on the same computer and connection but not in Dolphin{anty}'s checker, the help center says to contact Dolphin{anty} support, and notes this is extremely rare. If some of your proxies work and others do not, the problem is the proxy itself, so replace or ask the provider about the failing ones.
Check whether the proxy is still active
If a proxy worked for several days and then stopped, the help center says either the internet provider is blocking it or the proxy was disabled on the server. In your provider's console, confirm the lease has not ended and that there is traffic left.
Check what else is installed
If no website opens at all, Dolphin{anty}'s FAQ names other proxy tools such as Socksescort, Proxifier, Pia5Proxy and 922 as possible interference. If google.com opens but your target site does not, the site has likely flagged that proxy IP, and the FAQ advice is to replace the proxy.
Symptom, cause, fix
| Item | What the help center points to | What to do |
|---|---|---|
| Profile will not start; red exclamation near "Start" with "Error checking connection to proxy" | Your connection cannot reach the proxy, the proxy server does not respond, or (rarely) the built-in checker | Re-copy the details, then switch networks |
| ValidationError: 'port' length must be less than or equal to 5 characters long | The proxy is entered in the wrong format | Use HOST:PORT:LOGIN:PASSWORD or LOGIN:PASSWORD@HOST:PORT with no extra spaces or symbols |
| validationNew.app_rules_proxy_rule | Same as above: the string does not follow a supported format | Rewrite the string in one of the supported formats |
| "Failed to establish a proxy connection. Check proxy operation..." | Your internet provider blocks the proxy server, the proxy does not respond, or the built-in checker cannot verify it | Try another network, such as a phone hotspot |
| Worked for several days, then stopped | The internet provider blocks the connection, or the proxy was disabled on the server | Switch networks, then check the lease or traffic in the provider console |
| Some sites open, the target site does not | The site has likely flagged the proxy IP | Use a different proxy IP |
| Location differs from what you expected | IP geolocation databases differ | Compare the country in several IP lookup sites; if the country is wrong everywhere, contact the provider |
| "You have reached the proxy limit of your current plan" | The Free plan allows up to 50 proxies per account | Delete unused or non-working proxies in the "Proxies" section, or upgrade |
注：Symptoms, messages and causes come from Dolphin{anty}'s help center pages on adding a proxy, checking a proxy and proxy FAQ, read on 9 November 2026. The "what to do" column is our reading of those pages.
Proxy302 gateway values to compare
If the proxy is from Proxy302, the gateway host is proxy.proxy302.com. HTTP uses port 2222 and SOCKS5 uses port 3333, following the protocol you chose when you generated the proxy. Compare three things with what you pasted into Dolphin{anty}: the host, the port, and the http or socks5 prefix. If the port belongs to the other protocol, the connection will not work. Copy the login and password straight from the generated proxy rather than retyping them; see proxy address, port, login and password for what each field means.
Static ISP IPs stay the same for the lease term, so a static IP that worked yesterday and fails today is worth checking against its end date. If the failure is a general timeout, the guide on proxy connection failed covers the network-side checks, and proxy authentication required covers rejected credentials. Once the connection works, confirm the country with checking a proxy's IP location.
Where to set up Dolphin{anty} for the first time
This guide covers troubleshooting only. For the profile form and the proxy field step by step, see the Dolphin{anty} integration page.
How to do it with Proxy302
Proxy302 gives you a gateway at proxy.proxy302.com, with HTTP on port 2222 and SOCKS5 on port 3333, matching the protocol you generate.
Static ISP IPs stay fixed for the lease term, from US$0.5 for 1 day or US$7.99 for 30 days.
How to do it with Proxy302: steps
Step 1
Open the product page that fits (static ISP, rotating residential or the ISP for AI subscriptions) and pick the region, traffic or lease term, and quantity. For per-IP products also choose HTTP or SOCKS5.
Step 2
After the proxy is generated, open My assets and copy HOST, PORT, USERNAME and PASSWORD.
Step 3
Open https://ipinfo.io/json through the proxy and check that the country and org fields (ASN and organization) are what you expected.
Step 4
Then compare network type and native or broadcast on the IP purity check page. Two tools disagreeing is normal; go by your actual use.
Prices and limits
Rotating residential starts at US$1.50 per GB on the Budget line and US$5 per GB on the Premium line; larger packages are cheaper per GB, and purchased traffic has no expiry. A static ISP IP is US$0.50 for one day or US$7.99 for 30 days, the same in every country, fixed for the lease. A datacenter IP is US$0.25 for one day or US$3.99 for 30 days. Stock changes daily, so go by the order page. The smallest purchase is 1 GB of traffic or one IP for one day. Changing IP does not lift a restriction or raise a limit; what happens to an account is up to the platform.
Proxy302 at a glance
| Item | Price | Protocols | Locations |
|---|---|---|---|
| Rotating residential | From US$1.50 per GB (Budget line); US$5 per GB (Premium line); lower per GB in larger packages | HTTP, SOCKS5 | 195+ countries and regions; state and major city on lines that support it (small towns and some connections exit at country level; no city level in Russia and Singapore) |
| Static ISP, per IP | US$0.50 for 1 day, US$7.99 for 30 days, the same in every country | HTTP or SOCKS5, chosen per IP | 30 countries on the order form; stock changes daily |
| ISP for AI subscriptions | Per 30 days: Claude 15 PTC, GPT / Grok 10 PTC, Gemini 8 PTC | HTTP or SOCKS5 | Claude: US, UK, DE, JP. GPT / Grok: US, UK, FR, JP, KR. Gemini: US, UK, FR, JP |
| Datacenter, per IP | US$0.25 for 1 day, US$3.99 for 30 days | HTTP or SOCKS5, chosen per IP | 8 countries |
Prices are in PTC, paid from the wallet; 1 PTC = US$1. There is no free trial: the smallest purchase is 1 GB of rotating residential traffic or one IP for one day. Checked on 9 November 2026.
FAQ
What does the proxy check in Dolphin{anty} do?
According to the help center, after you enter a proxy you click the arrows on the right edge of the line, and Dolphin{anty} checks the connection, the geolocation and the time zone. A failure appears as a red "Error" status on the proxy screen or red arrows on the profiles screen.
Which proxy types does Dolphin{anty} accept?
The help center gives http, socks5 and socks4 as examples of the type prefix placed to the left of the proxy string. It does not list other types on the pages we read, so use one of these three prefixes and make sure it matches the proxy you were issued.
The proxy works for my colleague but not for me. Why?
Dolphin{anty}'s FAQ says your internet provider may be blocking the proxy. Switch to another network, such as a phone hotspot, and check again. If it still fails, check your network settings or ask the proxy provider.
Why does my proxy show a different country or city?
The FAQ explains that IP geolocation databases differ from each other. Check the location in more than one lookup site. If the country is right in most of them, the proxy is fine. If not, contact the provider.
The profile starts, but some websites do not open. Is Dolphin{anty} at fault?
Usually not. The FAQ suggests testing whether google.com opens. If it does and only your target site fails, that site has likely flagged the proxy IP, and the advice is to replace the proxy. If no site opens, look for other proxy software installed on the computer.
Read next
Fix ERR_PROXY_CONNECTION_FAILED
The ERR_PROXY_CONNECTION_FAILED error appears in Chrome and Edge when the browser cannot establish a connection with a proxy server.
407 Proxy Authentication Required
HTTP 407 Proxy Authentication Required comes from the proxy server, not from the website you are trying to reach.
Check a proxy's IP, country and ISP
Check the exit IP, country and ISP your proxy really gives you in 30 seconds — and why IP databases disagree on the city. With our own test of three lookup services.
Proxy address, port, username and password
Every working proxy is described by five basic fields: protocol, host address, port, login, and password.
AdsPower proxy check failed
What to check when AdsPower says "Connection test failed" or a profile reports a proxy failure: type, fields, validity, network, VPN, then confirm the exit IP.
ISP proxies (static residential)
Fixed static ISP proxies: a residential-grade IP that stays the same for the whole term. For social accounts, stores and AI tools. HTTP and SOCKS5.
View options and pricingReference links
4
- Dolphin{anty} Help Center: How to add a proxy
Official documentation · Confirmed on:
Read on 9 November 2026: where proxies are added, the three accepted input formats, type prefixes, the check arrows and the Working/Unknown statuses.
- Dolphin{anty} Help Center: Checking a proxy
Official documentation · Confirmed on:
Read on 9 November 2026: where a failed check appears, the 'Error checking connection to proxy' message, and the listed fixes for network and checker problems.
- Dolphin{anty} Help Center: Proxy FAQ
Official documentation · Confirmed on:
Read on 9 November 2026: the listed proxy errors, causes and fixes, including format errors, network blocking, geolocation differences, plan limit and interfering software.
- Proxy302 product facts and price list
Product observation · Confirmed on:
Product facts file of the site, checked 9 November 2026 against the console, the backend and the price table: products, prices in US$ (1 PTC = US$1), lease terms, protocols and ports, countries, quantity limits, no free trial.
Ready to try it?
Create an account, top up once, then pick rotating residential, static ISP or datacenter IPs and have one running in your browser within minutes.