# DeepScan > DeepScan: check domain lists with year-by-year history, links and verdict. Buy expired domains, auction lots, our own drops and selection to order. DeepScan is a vetting and sourcing lab for expired domains: year-by-year history, links, spam check and a verdict for any list, plus selection to order. ## Pages - [Buy and Check Expired Domains](https://deepscan.pro): DeepScan: check domain lists with year-by-year history, links and verdict. Buy expired domains, auction lots, our own drops and selection to order. - [Pricing: pay per checked domain](https://deepscan.pro/pricing): No subscriptions: you pay for domains actually checked. A starter budget on sign-up, top up your balance, and the price is shown before each task. - [Documentation: how to check expired domains](https://deepscan.pro/documentation): How to use DeepScan: expired domain selection, link check, site DR and domain history. Creating a task, selection conditions, scoring, export and integrations. - [About us: from checking to buying expired domains](https://deepscan.pro/about): DeepScan is a vetting and sourcing lab for expired domains: year-by-year history, links, spam check and a verdict for any list, plus selection to order. - [Expired domains blog](https://deepscan.pro/blog): DeepScan articles about expired domains: how to find them, check history and metrics, weigh risks and pick domains for your projects. - [Contact us](https://deepscan.pro/contact): DeepScan support on Telegram: questions about domain scores, paused tasks, charges and account access. We reply within one working day. - [Terms of use](https://deepscan.pro/terms): The agreement with DeepScan: your account, pay-per-checked-domain with no subscriptions, refunds and acceptable use. - [Privacy policy](https://deepscan.pro/privacy): What data DeepScan collects, why it is needed, how long it is kept, who it is shared with, and how to request a copy or delete your account. ## Free tools - [Free Domain Tools: Authority, History, WHOIS, DNS](https://deepscan.pro/tools): Free tools to check a domain before you buy: authority by the open web graph, archive history, WHOIS and age, DNS and blacklists, redirects. No sign-up. - [Free Domain Authority Checker (Bulk, No Sign-up)](https://deepscan.pro/tools/domain-authority-checker): Check website authority for up to 5 domains at once: rank among 130M+ domains in the open web graph, referring domains and a 0–100 score. Instant and free. - [Free Domain History Checker: Snapshots by Year](https://deepscan.pro/tools/domain-history-checker): See what a domain was before: archived snapshots by year with response codes, first snapshot date, technologies, title and language. Up to 5 domains, free. - [Free WHOIS Lookup & Domain Age Checker](https://deepscan.pro/tools/whois-lookup): Is the domain taken? Registration date, expiry, registrar and domain age straight from the registries (RDAP, WHOIS). Up to 5 domains, no sign-up. - [Free DNS & Domain Blacklist Checker](https://deepscan.pro/tools/dns-blacklist-checker): DNS records, parking name servers and domain blacklist answers for up to 5 domains: A, AAAA, NS, MX, CNAME and blacklists. Instant, no sign-up. - [Free Redirect Checker: Live Chain & History](https://deepscan.pro/tools/redirect-checker): Where a domain redirects now, hop by hop, where it led in past crawls and how many archived snapshots were redirects each year. Up to 5 domains, free. - [Free Bulk Domain Checker: Name, Rank, Age](https://deepscan.pro/tools/bulk-domain-checker): Sort a domain list fast: spam words in the name, digits and hyphens, rank in the open web graph, registration status and age. Up to 5 domains, no sign-up. ## Documentation ### Getting started - [What is DeepScan](https://deepscan.pro/documentation): Service overview: what DeepScan does and who it is for - [Sign up and log in](https://deepscan.pro/documentation/start-register): Creating an account, confirming your contacts, and signing in - [First task in 5 minutes](https://deepscan.pro/documentation/start-first-task): Step-by-step example: from a domain list to a finished report - [Interface tour](https://deepscan.pro/documentation/start-interface): Header, menu, balance, notifications, the help button, and the tour - [Terms and concepts](https://deepscan.pro/documentation/start-glossary): Key terms you will see in the interface and reports ### Your account - [Dashboard and limits](https://deepscan.pro/documentation/acc-dashboard): A summary of account activity, spending, and limits - [Profile and contacts](https://deepscan.pro/documentation/acc-profile): Name, avatar, email, phone, and account protection level - [Password and 2FA](https://deepscan.pro/documentation/acc-security): Changing your password, two-factor authentication and active sessions - [Notifications](https://deepscan.pro/documentation/acc-notifications): The header bell and notification settings ### Domain Selection - [How selection works](https://deepscan.pro/documentation/sel-overview): The full domain screening pipeline for your filters - [Selection conditions](https://deepscan.pro/documentation/sel-conditions): Thresholds for domain metrics and archived snapshots - [Creating a task](https://deepscan.pro/documentation/sel-task): Running the pipeline and tracking progress - [Condition presets](https://deepscan.pro/documentation/sel-presets): Saving and reusing condition sets ### Link Check - [Section overview](https://deepscan.pro/documentation/lc-overview): Detailed backlink profile analysis for domains - [Analysis conditions](https://deepscan.pro/documentation/lc-conditions): The "Link selection", "Thresholds" and "Output" groups - [Link quality](https://deepscan.pro/documentation/lc-best-links): The link quality filter and its configuration - [Results and columns](https://deepscan.pro/documentation/lc-results): The results table ### Site DR - [Section overview](https://deepscan.pro/documentation/dr-overview): Bulk Domain Rating check for a list of domains - [Creating a task](https://deepscan.pro/documentation/dr-task): Selection thresholds and launching a task - [Results and filter](https://deepscan.pro/documentation/dr-results): The DR results table and the check-result filter ### Domain History - [Why history matters](https://deepscan.pro/documentation/wa-overview): Checking a site's past through archived snapshots - [Selection conditions](https://deepscan.pro/documentation/wa-conditions): Snapshot and history conditions - [Table and tabs](https://deepscan.pro/documentation/wa-results): First snapshot table and per-domain tabs - [First snapshot results](https://deepscan.pro/documentation/wa-first-snapshot): Quick analysis of the earliest snapshot of a domain ### Results and tasks - [Tasks and folders](https://deepscan.pro/documentation/res-tasks): The Result page: tasks, folders and statuses - [Shared access](https://deepscan.pro/documentation/res-sharing): How to share a task folder with another user - [Results table](https://deepscan.pro/documentation/res-table): Table columns, filters, and search - [Domain card](https://deepscan.pro/documentation/res-card): Detailed domain card (side panel) - [Domain actions](https://deepscan.pro/documentation/res-actions): Reprocessing, notes, moving, and deleting - [Excel export](https://deepscan.pro/documentation/res-export): Exporting results to Excel (.xlsx) ### Analysis and spam - [Verdicts and recommendations](https://deepscan.pro/documentation/ai-verdict): How to read verdicts in the Score column - [Quality score](https://deepscan.pro/documentation/ai-score): Domain quality score on a 1–10 scale - [Signal badges](https://deepscan.pro/documentation/ai-signs): Small icons next to the verdict and what they mean - [Spam categories](https://deepscan.pro/documentation/ai-spam): Which spam categories the service recognizes ### Domain metrics - [Core metrics](https://deepscan.pro/documentation/ah-overview): Which domain metrics DeepScan shows - [Links table](https://deepscan.pro/documentation/ah-links): Columns of the referring pages table - [Traffic history](https://deepscan.pro/documentation/ah-history): Domain organic traffic history ### Queues and speed - [How tasks are processed](https://deepscan.pro/documentation/q-overview): The task queue: what happens after you click "Start" - [Parallel processing](https://deepscan.pro/documentation/q-parallel): Why a large task is processed more efficiently - [Account limits](https://deepscan.pro/documentation/q-limits): 24-hour analysis limit and task size - [Errors and retries](https://deepscan.pro/documentation/q-errors): What to do when a domain finishes with an error ### Balance and pricing - [How billing works](https://deepscan.pro/documentation/bl-model): Pay per checked domain, no subscriptions - [Topping up the balance](https://deepscan.pro/documentation/bl-topup): Top-up methods and request statuses - [Discounts and promo codes](https://deepscan.pro/documentation/bl-discounts): Personal discounts and promo codes - [Transactions log](https://deepscan.pro/documentation/bl-history): All balance operations with filters ### Affiliate program - [Becoming a partner](https://deepscan.pro/documentation/aff-overview): Application, approval, and the affiliate dashboard - [Links and promo codes](https://deepscan.pro/documentation/aff-links): Referral links, UTM tags, and promo codes - [Earnings and payouts](https://deepscan.pro/documentation/aff-payouts): Affiliate balance, hold, and requesting a payout - [Terms and tiers](https://deepscan.pro/documentation/aff-terms): Rates, reward models, and tiers ### Integrations - [Own API key](https://deepscan.pro/documentation/in-ahrefs): Your own Ahrefs API key and a 50% discount on checks - [Telegram bot](https://deepscan.pro/documentation/in-telegram): Linking the bot: notifications, phone confirmation, and 2FA ### Google Sheets - [Prepare the spreadsheet](https://deepscan.pro/documentation/gs-credentials): What to do in Google Sheets before connecting: create a spreadsheet, share it and copy its link - [Connect to DeepScan](https://deepscan.pro/documentation/gs-integration): Connecting the spreadsheet in your account: the link, the test, what the card shows and how to disconnect - [Table structure](https://deepscan.pro/documentation/gs-table): Which sheets the service creates when exporting results, and what the sheet with domain lists looks like - [Auto-import (script)](https://deepscan.pro/documentation/gs-autoimport): Automatic import via Google Apps Script and Webhook ### FAQ - [General questions](https://deepscan.pro/documentation/faq-general): Answers to common questions about the service - [Billing and balance](https://deepscan.pro/documentation/faq-billing): Common questions about balance, charges, and prices - [Troubleshooting](https://deepscan.pro/documentation/faq-troubleshoot): Typical problems and how to solve them ## Languages - [English](https://deepscan.pro) - [Русский](https://deepscan.pro/ru) - [Español](https://deepscan.pro/es) - [Deutsch](https://deepscan.pro/de) - [Français](https://deepscan.pro/fr) - [Italiano](https://deepscan.pro/it) - [Português](https://deepscan.pro/pt) - [Polski](https://deepscan.pro/pl) - [Türkçe](https://deepscan.pro/tr) - [Українська](https://deepscan.pro/uk) - [Bahasa Indonesia](https://deepscan.pro/id) - [简体中文](https://deepscan.pro/zh) - [日本語](https://deepscan.pro/ja) - [한국어](https://deepscan.pro/ko) ## Optional - [sitemap.xml](https://deepscan.pro/sitemap.xml) - [blog sitemap](https://deepscan.pro/blog/sitemap.xml) - [blog RSS](https://deepscan.pro/blog/rss.xml) - [robots.txt](https://deepscan.pro/robots.txt)