blacklist scanning

This article systematically disassembles the core technical path of IP purity detection, covering dimensions such as protocol layer feature analysis, blacklist library comparison, and behavior pattern verification, and provides engineering detection solutions and optimization strategies. Core criteria for determining IP purityBlacklist statusCheck whether the IP is included in mainstream anti-spam databases such as Spamhaus and BarracudaVerify the DNS Black Hole List (DNSBL) status. It is recommended to use the batch query interface of mxtoolbox.comProtocol layer exposure featuresDoes the TLS fingerprint match the real browser (such as the JA3 hash of Chrome 120+)Are the TCP/IP protocol stack parameters (such as TTL value, window size) consistent with the residential network characteristics?Abnormal behavior patternsHigh-frequency request characteristics (such as QPS>10 may trigger risk control)Does the traffic time distribution conform to the Poisson distribution (real user behavior model)? Engineering testing solutions and tool chainsBlacklist scanning technologyOnline testing platform:IPQS (ipqualityscore.com): Provides IP reputation score (0-100) and proxy type identificationBrightData Inspector: Returns the IP's geographic location, ASN, and historical abuse records in real timeCommand line tools:# Use curl to check Cloudflare protection statuscurl -I https://example.com --proxy http://IP:PORT# Check if the CF-RAY field in the response header existsIn-depth analysis of protocol fingerprintsTLS fingerprint detection:Use the JARM tool (Python version) to scan the encryption suite characteristics of the target IP:from jarm.scanner import Scannerscanner = Scanner()result = scanner.scan("1.1.1.1", 443)print(result.fingerprint) # Output JARM fingerprint similar to "2ad2ad0002ad2ad..."TCP/IP parameter verification:Through Wireshark packet capture analysis:TTL value: Residential networks usually have a value of 64 (Linux) or 128 (Windows)TCP Window Scaling Factor: Proxy servers may disable this featureSimulate request verificationBrowser Automation Testing:Use Selenium + Undetected-Chromedriver to initiate a request to detect whether the verification code is triggered:from selenium import webdriveroptions = webdriver.ChromeOptions()options.add_argument('--proxy-server=socks5://IP:PORT')driver = webdriver.Chrome(options=options)driver.get("https://whatismyipaddress.com") # Verify whether the IP is exposed IP2world pure IP technology guaranteeReal-time blacklist monitoring systemConnect to 27 major anti-fraud databases around the world and update IP reputation scores every hourAutomatically isolate IPs with a score < 85, and replace them with a response time < 5 minutesProtocol stack camouflage technologyDynamically adjust the TTL value to the 64/128 range to simulate the characteristics of the real operating systemSupport WebRTC blocking and Canvas fingerprint randomizationBehavioral Pattern Optimization EngineRequest interval control: Use the Poisson distribution algorithm with λ=1.2 to generate the request sequenceTraffic mixing strategy: Mix business traffic and simulated browsing behavior in a ratio of 3:7 Typical problem solutionsScenario 1: IP is blocked by the target websitePerform a JARM scan. If the fingerprint deviates from the real browser by >40%, enable IP2world's dynamic TLS fingerprinting feature.Get real-time replacement suggestions through IP2world's "IP Health API":import requestshealth = requests.get(f"https://api.ip2world.com/health?ip={YOUR_IP}&key=API_KEY").json()if health["score"] < 90:activate_new_ip() # trigger automatic changeScenario 2: Triggering Cloudflare human-machine verificationUse Selenium to simulate real mouse trajectory (Bezier curve algorithm)Enable the "Residential IP + Fingerprint Browser" package in the IP2world consoleScenario 3: The API returns a 403 errorCheck if X-Forwarded-For in HTTP header leaks real IPSwitch to IP2world's HTTPS proxy and force the HTTP/2 protocol to be enabledOptimization suggestions:Prioritize IP2world's static residential proxy (purity score>95)Run the automated detection script periodically (recommended every 6 hours)For high-value services, configure IP2world's dual-channel disaster recovery solution (automatic switching of primary IP + backup IP)If you need to obtain the latest IP detection rule library or encounter complex blocking scenarios, it is recommended to turn on the [Online Search] function. The system will synchronize the latest anti-detection countermeasures in real time. As a professional proxy IP service provider, IP2world provides a variety of high-quality proxy IP products, including dynamic residential proxy, static ISP proxy, exclusive data center proxy, S5 proxy and unlimited servers, suitable for a variety of application scenarios. If you are looking for a reliable proxy IP service, welcome to visit IP2world official website for more details.