domain-research

免费的域名研究和可用性检查。无需API密钥或凭证。使用RDAP（1195+顶级域名）并以whois CLI作为后备，实现全面覆盖。检查域名是否可用、跨顶级域名搜索关键词、执行WHOIS/RDAP查询、检查过期日期以及查找名称服务器。当需要执行以下操作时使用：检查域名是否可用、搜索域名、查找域名所有者、检查域名到期时间、获取名称服务器、批量检查域名或进行任何域名研究。触发词包括：'check domain', 'is domain available', 'search domains', 'domain availability', 'who owns this domain', 'whois', 'domain expiry', 'when does domain expire', 'nameservers for', 'domain research', 'find domains for', 'domain ideas', 'bulk domain check'.

Domain Research

Free domain availability checking and WHOIS/RDAP lookup. Zero credentials. Works out of the box.

How it works: RDAP protocol (1195+ TLDs, JSON, fast) with whois CLI fallback for TLDs RDAP doesn't cover (.io, .co, .me, .sh, .gg, .so, etc). Parallel lookups for speed.

CLI Script

SCRIPT=".opencode/skills/KORTIX-domain-research/scripts/domain-lookup.py"

No env vars, no API keys, no setup. Just run it.

Commands

Check availability

# Single or multiple domains (comma-separated)
python3 "$SCRIPT" check "example.com"
python3 "$SCRIPT" check "myproject.com,myproject.io,myproject.ai,myproject.dev"

Search keyword across TLDs

# Default: .com .net .org .io .co .ai .dev .app .xyz .me .tech .cloud + more
python3 "$SCRIPT" search "myproject"

# Custom TLDs
python3 "$SCRIPT" search "myproject" --tlds ".com,.io,.ai,.dev,.app,.co"

WHOIS / RDAP lookup

# Full registration details (registrar, dates, status, nameservers, contacts)
python3 "$SCRIPT" whois google.com
python3 "$SCRIPT" whois kortix.ai

Expiry check

# When does it expire? How many days left?
python3 "$SCRIPT" expiry kortix.ai

Nameservers

python3 "$SCRIPT" nameservers google.com

Bulk check from file

# File with one domain per line
python3 "$SCRIPT" bulk domains.txt

How it works internally

RDAP first -- queries rdap.org/domain/{domain}. HTTP 200 = taken, 404 = available. Returns structured JSON.
whois fallback -- for TLDs without RDAP support, runs whois CLI and pattern-matches response.
Parallel -- uses thread pool (8 workers) for batch checks.
Rate-aware -- bulk mode pauses between batches.

RDAP coverage (1195+ TLDs)

.com, .net, .org, .ai, .dev, .app, .xyz, .tech, .cloud, .gay, .wtf, .bot, .news, .space, .capital, and 1180+ more gTLDs.

whois fallback covers

.io, .co, .me, .sh, .gg, .so, and other ccTLDs that RDAP doesn't support yet.

Rules

No credentials needed. Just run the script.
Present results clearly. Highlight available domains. Show method used (RDAP/whois).
For keyword search, default to common TLDs unless the user specifies otherwise.
For WHOIS lookups, show registrar, dates, status, nameservers. Contacts are often redacted (GDPR).
Rate limits: RDAP has no documented limit but be reasonable. whois registries may throttle after ~50 queries/minute.
Cannot register/buy domains. This is research only. Direct the user to a registrar to purchase.