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Bulk check the age of Chinese phone numbers for user profiling and risk assessment.
Input Format
One record per line, format: Mobile Number
Supports space, comma, tab separators
• Supports up to 500 records per batch
• Automatic Mobile Number validation after clicking 'Next'
• If deduplication is enabled, duplicate records will be removed automatically
User-Agent String Lookup
Access a comprehensive list of User-Agent strings for major browsers and operating systems. Features one-click copying for web development, debugging, and scraper spoofing.
Bulk Random User Agent Generator
Bulk generate browser and device User-Agent strings to simulate real user environments and effectively bypass anti-scraping detection.
User Agent String Parser
Parse User-Agent strings from HTTP request headers to extract detailed technical information, including browser, operating system, and device type.
Online NSLookup Tool
Check domain DNS records online. Instantly look up A, AAAA, CNAME, MX, and NS records with support for custom DNS servers.
User-Agent String Lookup
Access a comprehensive list of User-Agent strings for major browsers and operating systems. Features one-click copying for web development, debugging, and scraper spoofing.
Bulk Random User Agent Generator
Bulk generate browser and device User-Agent strings to simulate real user environments and effectively bypass anti-scraping detection.
User Agent String Parser
Parse User-Agent strings from HTTP request headers to extract detailed technical information, including browser, operating system, and device type.
Online NSLookup Tool
Check domain DNS records online. Instantly look up A, AAAA, CNAME, MX, and NS records with support for custom DNS servers.
Random User Agent Generator
Generate random browser User-Agent strings for developers, QA testers, and web scrapers to simulate various devices and platforms.
When you need to assess mobile user loyalty or identify potentially risky numbers, this tool quickly returns the number's activation duration using carrier data. Phone number age refers to the number of months since the phone number was first activated, output in five categories: 0-3 months, 3-6 months, 6-12 months, 12-24 months, and over 24 months.
Is the phone number age lookup accurate?
There may be a 1-2 month delay due to carrier data update cycles.
Can I check 170/171 prefixes?
Queries for virtual network operator (MVNO) prefixes may return "Unknown" because some carriers do not share this data.
The maximum limit is 100 records per query. Results cannot be used as legal evidence. Using this data for telecom fraud or other illegal purposes is strictly prohibited. For business scenarios, we recommend using this alongside other risk management metrics.
For the financial industry, we recommend using a phone number age of under 6 months as a supplementary risk indicator, combined with real-name authentication. Example: Entering "13912345678" might output "12-24 months | Stable User", while "17012345678" might output "Unknown | Virtual Operator".
