
Ip2Whois
IP2WHOIS provides a WHOIS lookup API that returns comprehensive domain information, including creation date, updated date, expiration date, domain age, registrant contact information, and nameservers.
Verdict
Common use cases
- Verify domain ownership before partnership outreach
- Investigate phishing domains during security incidents
- Audit nameserver configurations across company properties
- Discover competitor domains sharing infrastructure
- Check domain expiration dates for renewal planning
Integration
- Vendor
- Ip2Whois
- Category
- other
- Auth
- API_KEY
- Tools
- 2
- Composio slug
ip2whois
Tools
- Hosted Domains Lookup
Tool to retrieve hosted domains for a given IP address. Use this after validating the IP.
- IP2WHOIS Domain Lookup
Tool to retrieve WHOIS information for a domain. Use when you need registrar and contact details for a specific domain.
Setup
Setup guide
- 11. Go to ip2whois.com and sign up for an account to generate your API key from the dashboard. 2. In Switchy, open Settings > Integrations > Browse MCP Servers and search for Ip2Whois. 3. Click Connect and paste your API key when prompted. 4. Switchy validates the key and adds Ip2Whois to your workspace's available MCPs. 5. Open any Space and type '@Ip2Whois lookup WHOIS for example.com' to test the connection. 6. The MCP returns registrar name, creation date, expiration date, nameservers, and registrant contact details in seconds. 7. To find all domains on an IP, try '@Ip2Whois show hosted domains for 8.8.8.8' and confirm you see a list of domain names. 8. If the MCP returns an authentication error, double-check your API key hasn't expired and that your account has remaining query credits.
What teammates see: by default, memories from Ip2Whois are scoped to the Space (PROJECT visibility) - you can mark any memory PRIVATE or share it ORG-wide.
Works well with
Top models
Compatibility data appears once enough Spaces have used this MCP together with a given model.
How Switchy teams use it
Starter prompts
Domain Registration Check
@Ip2Whois lookup WHOIS information for acmecorp.com and summarize the registrar, creation date, and nameserver configurationOpen in a Space →
Reverse IP Investigation
@Ip2Whois show me all hosted domains for IP address 104.21.68.87 and list the top 10 resultsOpen in a Space →
Expiration Date Audit
@Ip2Whois get WHOIS data for example.org and tell me the expiration date and registrar lock statusOpen in a Space →
Nameserver Verification
@Ip2Whois look up techstartup.io and extract the nameserver records and registrar contact emailOpen in a Space →
Bulk Domain Ownership
@Ip2Whois find hosted domains on 192.0.2.15 then cross-reference with WHOIS data for the first three domainsOpen in a Space →
Example outputs
Illustrative - representative of the model's voice and quality, not literal recordings.
@Ip2Whois look up WHOIS information for example.com including registrar and registration dates
Retrieved WHOIS data for example.com: Domain registered through Example Registrar LLC on 1995-08-14, expires 2025-08-13. Registrant organization is listed as Example Organization (contact details redacted per GDPR). Name servers: ns1.example.com, ns2.example.com. Domain status: clientTransferProhibited. This illustrative response shows the typical structure returned by the IP2WHOIS Domain Lookup tool.
This example demonstrates the core domain WHOIS lookup capability. Note that contact information is increasingly redacted due to privacy regulations (GDPR, WHOIS privacy services). The tool requires a valid API key with sufficient query credits. WHOIS data accuracy depends on the domain registrar's reporting.
@Ip2Whois find all domains hosted on IP address 93.184.216.34
Found 3 domains hosted on 93.184.216.34: example.com, example.net, example.org. This illustrative response shows how the Hosted Domains Lookup tool returns a list of domains sharing the same IP address. Actual results vary based on the IP's hosting configuration and whether domains use shared hosting, CDN services, or dedicated infrastructure.
This example showcases reverse IP lookup — useful for security research, competitive analysis, or understanding hosting infrastructure. The tool requires IP validation before lookup. Results may be incomplete for IPs behind load balancers or CDNs. Each query consumes API credits, so batch lookups should be planned carefully.
@Ip2Whois check the WHOIS records for suspicious-domain.xyz and list all other domains on the same IP to assess potential phishing infrastructure
WHOIS for suspicious-domain.xyz: Registered 2024-12-15 through Budget Registrar, expires 2025-12-15. Privacy protection enabled, no public contact details. Hosted on 198.51.100.42 alongside 47 other domains including random-string-1234.xyz, crypto-giveaway.xyz, urgent-security-alert.com. This pattern — recent registration, privacy protection, shared hosting with similarly suspicious domains — suggests potential phishing infrastructure. This illustrative example combines both tools for threat analysis.
This example demonstrates how pairing domain WHOIS lookup with hosted domains lookup enables security investigations. The AI can identify red flags (recent registration, privacy shields, suspicious co-hosted domains) that human analysts might miss. However, legitimate domains also use privacy protection and shared hosting, so findings require human judgment before taking action.
Use-case deep-dives
When Ip2Whois speeds up threat response for small security teams
A 3-person security team at a SaaS company sees suspicious traffic from an unknown domain in their logs. They need registrar details and hosting info fast to decide whether to block it. Ip2Whois wins here because both tools (domain WHOIS and hosted domains lookup) run in under 5 seconds with just an API key—no OAuth dance, no rate-limit negotiation. The team can query a domain, see the registrar and contact details, then pivot to the IP's other hosted domains to spot patterns. This works until you're triaging more than 50 domains per incident; at that scale, you need a dedicated threat intel platform with bulk lookups. If your security workflow is 'investigate one suspicious domain during standup,' Ip2Whois keeps you moving without leaving Switchy.
Why Ip2Whois falls short for ongoing competitor tracking
A 2-person marketing team wants to track when competitors register new domains or change hosting providers. Ip2Whois gives you point-in-time WHOIS data and hosted domain lists, but it doesn't monitor changes or send alerts. You'd need to manually re-query the same domains every week, which defeats the purpose of automation. This MCP is better for one-off research—like when you're writing a competitive analysis and need to confirm who owns a domain or what else is hosted on their IP. If your use case is 'check this domain once,' Ip2Whois is fine. If it's 'tell me when anything changes,' you need a monitoring service with webhooks, not a lookup MCP.
When Ip2Whois confirms domain ownership during agency intake
A 5-person digital agency onboards new clients and needs to verify the client actually owns the domain they're claiming. The account manager can use Ip2Whois to pull WHOIS registrar details and compare the contact email to the client's. This takes 30 seconds instead of asking the client to forward a registrar screenshot. The hosted domains lookup also reveals if the client's IP is shared hosting (which matters for SEO and performance scoping). This works cleanly for agencies handling 10-20 onboardings per month. Beyond that, you'd want a CRM integration that auto-verifies domains at form submission. For manual verification during a kickoff call, Ip2Whois keeps the process moving without tab-switching to a separate WHOIS site.
Frequently asked
What does the Ip2Whois MCP do in Switchy?
It lets your AI agents look up domain registration details and find which domains are hosted on a specific IP address. You get WHOIS data like registrar info, contact details, and creation dates without leaving your Switchy workspace. Useful for security research, competitive analysis, or verifying domain ownership before outreach.
Do I need an Ip2Whois account to use this MCP?
Yes. You need an Ip2Whois API key, which means signing up for their service separately. Switchy stores the key securely but doesn't provide one. Check Ip2Whois pricing — they offer a free tier with limited lookups, then paid plans for higher volume.
Can it look up WHOIS data for any domain extension?
It depends on what Ip2Whois supports, not Switchy. Most common TLDs like .com, .net, .org work fine. Country-code TLDs and newer extensions vary — some registries don't expose full WHOIS data publicly. The MCP will return whatever Ip2Whois can retrieve for that domain.
How is this different from running a manual WHOIS command?
Manual WHOIS gives you raw text dumps that agents can't easily parse. This MCP returns structured JSON, so your AI can extract registrar names, expiry dates, or nameservers and act on them — like flagging domains expiring soon or comparing hosting patterns across a list.
Does using this MCP count against my Switchy plan limits?
No. Switchy doesn't meter MCP tool calls separately. However, each lookup counts against your Ip2Whois API quota. If you hit their rate limit, the MCP will fail until your quota resets. Monitor usage in your Ip2Whois dashboard, not Switchy.