Bulk WHOIS & Domain Availability Checker (RDAP + DNS)

Look up thousands of domains at once: registrar, creation date, expiry date, domain age, status, nameservers, registrant country, abuse contact and availability, plus DNS (A, MX, SPF, DMARC). The actor uses RDAP, the official ICANN successor to WHOIS, through the IANA bootstrap registry, and follows the registrar's RDAP server for extra detail. It falls back to classic port-43 WHOIS for country-code TLDs that don't offer RDAP yet. Paste domains, URLs or email addresses, and you get a clean table you can export to CSV, Excel or JSON, or pull through the API.

What you get per domain

• Availability: registered, available, pending-delete or unknown, plus an available true/false flag.
• Registration data: registrar (with IANA ID), createdDate, updatedDate, expiryDate, domainAgeDays / domainAgeYears, daysUntilExpiry, an expiringSoon flag, EPP statuses (clientTransferProhibited, …), nameservers and DNSSEC.
• Contacts (when public): registrant organization and country, registrar abuse email and phone. Data redacted under GDPR stays redacted. Nothing is guessed.
• DNS (optional): NS, A and MX records, SPF and DMARC policy, plus hasWebsite / hasEmail flags.
• Run summary: counts by availability, the list of available domains, domains expiring soon and invalid inputs (SUMMARY), plus an AVAILABLE CSV.

Use cases

• Domain investing and brand protection: bulk-check name ideas or typo variants, find expiring and pending-delete domains, and watch competitors' renewal dates.
• SEO and expired-domain research: check domain age, registrar and DNS before buying a domain or link. It pairs well with the Wayback Machine URL Extractor (see below).
• Lead generation and enrichment: add company age, registrar, country and whether a domain has working email (MX) or a website to a CRM list.
• Security and IT: inventory a domain portfolio, catch domains about to expire, check SPF/DMARC coverage and find abuse contacts.
• Data cleaning: paste raw URLs or emails. The registrable domain is extracted (shop.example.co.uk → example.co.uk) and de-duplicated.

Input

Field	Description	Default
domains	Domains, URLs or email addresses (one per line, or comma-separated)	3 sample domains
checkDns	Resolve NS / A / MX / SPF / DMARC over DNS-over-HTTPS	true
outputOnlyAvailable	Save only available / pending-delete domains (you pay only for saved rows)	false
expiringWithinDays	Threshold for the expiringSoon flag	30
whoisFallback	Use port-43 WHOIS for TLDs without RDAP	true
concurrency	Parallel lookups (each registry is also rate-limited separately)	10

{ "domains": ["apify.com", "https://www.bbc.co.uk/news", "jobs@stackoverflow.com", "my-new-startup-idea.com"] }

Output example

{
  "domain": "stackoverflow.com",
  "availability": "registered",
  "available": false,
  "registrar": "CSC Corporate Domains, Inc.",
  "createdDate": "2003-12-26T19:18:07Z",
  "expiryDate": "2027-02-02T11:59:59Z",
  "domainAgeYears": 22.8,
  "daysUntilExpiry": 99,
  "expiringSoon": false,
  "statuses": ["client transfer prohibited", "client delete prohibited", "client update prohibited"],
  "nameservers": ["ns-1033.awsdns-01.org", "ns-358.awsdns-44.com"],
  "abuseEmail": "domainabuse@cscglobal.com",
  "mxRecords": ["1 aspmx.l.google.com"],
  "spf": "v=spf1 ...",
  "dmarc": "v=DMARC1; p=reject; ...",
  "hasWebsite": true,
  "hasEmail": true,
  "source": "rdap"
}

Pricing (pay per event)

Event	Price
Actor start (per run)	$0.005
Domain checked and saved	$0.002 (= $2 per 1,000 domains)

DNS checks are included. If you turn on outputOnlyAvailable, you pay only for the available domains that are saved. Set a maximum cost per run, and the actor stops cleanly at your limit while keeping the results collected so far.

FAQ

Is this legal? Yes. RDAP and WHOIS are public lookup services that registries run for exactly this purpose, and DNS is public. The actor respects per-server rate limits, and it doesn't scrape any registrar website.

How accurate is "available"? available means the registry has no record of the domain and it has no DNS delegation. Premium or reserved names can still be unbuyable, so confirm at a registrar before you plan around a name.

Why are some fields empty? Many registries redact registrant data (GDPR), and some ccTLDs publish only minimal data. Those fields are left empty rather than guessed.

Which TLDs are supported? All gTLDs (.com, .net, .org, .io, .ai, new gTLDs …) and every ccTLD that has RDAP or WHOIS. If neither is available, the actor infers registration from DNS delegation and says so in note.

Related actors by pandabear

• App Store Scraper - Search, Top Charts & Keyword Ranks: iOS apps by keyword, top chart, category or developer, with full details and ASO keyword rank tracking.
• Sitemap Extractor & SEO Index Audit: extracts every sitemap URL and finds 404, noindex and canonical problems.
• Wayback Machine URL Extractor & Lost Page Finder: lists a domain's historical URLs from the Internet Archive, finds lost pages and suggests 301 redirects. Useful before buying an expired domain.
• App Store Reviews Scraper - All Countries + Analytics: Apple App Store reviews from 76 countries, with app details, rating trends by version and complaint keywords.
• Website Contact Scraper - Emails, Phones, Socials & Tech Stack: emails, phones, social links, company info and tech stack from any list of websites.
• Trending Topics Scraper - Google Trends, HN, Wikipedia & More: trending topics from Google Trends, Hacker News, Wikipedia, GitHub, Bluesky, Baidu and more, with heat scores and cross-platform clusters.

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中文说明

这个工具做什么

批量查询域名的 WHOIS 信息和是否可注册：注册商、注册日期、到期日期、域名年龄、状态、DNS 服务器、注册人国家/组织（如果公开）、滥用投诉联系方式，并可同时检查 DNS（A、MX、SPF、DMARC）。数据来自 ICANN 官方的 RDAP 协议（WHOIS 的继任者，通过 IANA 引导表找到各注册局的服务器），没有 RDAP 的国家域名会自动改用传统 WHOIS（43 端口）。可以直接粘贴域名、网址或邮箱，工具会自动提取主域名并去重。

适用场景

• 域名投资和品牌保护：批量检查想注册的名字或拼写变体，找出即将到期或待删除的域名，跟踪竞争对手的续费日期
• SEO 和过期域名研究：购买域名前查看域名年龄、注册商和 DNS（可配合 Wayback 工具查看历史页面）
• 销售线索补充：为客户名单补上公司域名年龄、注册商、国家，以及是否有网站（A 记录）和企业邮箱（MX 记录）
• 安全和 IT：盘点自有域名、提醒即将到期的域名、检查 SPF/DMARC 配置

输入参数

• domains：域名、网址或邮箱，每行一个，也可以用逗号分隔（必填，默认是 3 个示例域名）
• checkDns：是否检查 DNS（默认开启）
• outputOnlyAvailable：只保存可注册或待删除的域名（只对保存的结果收费）
• expiringWithinDays：到期前多少天标记为"即将到期"（默认 30）
• whoisFallback：没有 RDAP 的后缀是否改用 WHOIS（默认开启）
• concurrency：并发数（默认 10，每个注册局服务器另有单独限速）

输出

• 数据集：每个域名一条记录，包含是否可注册、注册商、注册/更新/到期日期、域名年龄、距到期天数、状态、DNS 服务器、DNSSEC、注册人国家/组织、滥用投诉邮箱和电话、A/MX/SPF/DMARC 记录、数据来源（rdap/whois/dns）
• SUMMARY：各状态的数量、可注册域名列表、即将到期域名列表、无效输入
• AVAILABLE：可注册域名的 CSV

价格（按事件计费）

• 每次运行启动：$0.005
• 每查询并保存一个域名：$0.002（每 1000 个 $2），DNS 检查不另收费

可以设置单次运行的费用上限，达到上限后工具会正常停止并保留已有结果。

常见问题

• 合法吗？ 合法。RDAP 和 WHOIS 是注册局专门公开的查询服务，DNS 本身也是公开的。工具会遵守各服务器的频率限制，不抓取任何注册商网站。
• "可注册"准确吗？ 表示注册局查不到这个域名，DNS 里也没有它。溢价域名或保留域名仍可能无法购买，最终请到注册商处确认。
• 为什么有些字段是空的？ 很多注册局按 GDPR 隐藏了注册人信息，有些国家域名只公开很少的数据。工具不会猜测这些字段。
• 支持哪些后缀？ 支持所有通用顶级域（.com/.net/.org/.io/.ai 及各类新后缀），以及所有提供 RDAP 或 WHOIS 的国家域名。两者都查不到时，工具会根据 DNS 判断域名是否已注册，并在 note 字段说明。

pandabear 的其他工具

• App Store Scraper - Search, Top Charts & Keyword Ranks：按关键词、排行榜、分类或开发者抓取苹果应用数据，并跟踪 ASO 关键词排名
• Sitemap Extractor & SEO Index Audit：提取网站全部 sitemap 网址，找出 404、noindex、canonical 等收录问题
• Wayback Machine URL Extractor & Lost Page Finder：从互联网档案馆提取域名的历史网址，找出丢失页面并给出 301 重定向建议
• App Store Reviews Scraper：抓取苹果 App Store 76 个国家的应用评论，附带应用详情、按版本的评分趋势和差评关键词
• Website Contact Scraper：从网站列表中提取邮箱、电话、社交媒体链接、公司信息和技术栈
• Trending Topics Scraper：汇总 Google Trends、Hacker News、维基百科、GitHub、Bluesky、百度热搜等平台的热门话题，附热度分和跨平台聚类