Passive domain analysis

Combine DNS, email security, registration, IDN and PTR data without contacting the domain’s website.

Queries are sent from NekoIP infrastructure. The target website is not contacted.

Enter one domain to get a passive summary of DNS, email and registration data.

Enter the domain without a path, for example example.com.
Examples:

Result

Enter a value to see the result.

What this tool checks

The summary combines domain identity, DNS, email policy, registration and limited PTR information in parallel. It remains passive and does not connect to the website, TLS endpoint or mail server.

How to read the result

Start with the overview, then inspect each section’s status. Available sections remain useful when another source times out; exact records and the stable JSON response stay under technical details.

Common problems

A partial result is not a domain outage. DNS and registry data have independent caches and ownership, while IDN script warnings are heuristics rather than proof of abuse.

Command-line example

curl 'https://nekoip.ru/api/v1/tools/domain-analysis?domain=example.com'

Related guides

DNS record types explainedA practical map of the DNS records used by websites, mail and domain security. SPF syntax and the 10-lookup limitUnderstand SPF mechanisms, recursive includes, void lookups and permanent errors. DMARC policies and tagsHow alignment, reporting and p=none/quarantine/reject work together. DKIM, MTA-STS, TLS-RPT and BIMIThe DNS records that complement SPF and DMARC for modern mail domains. EPP domain status codesTranslate registry statuses such as clientTransferProhibited and redemptionPeriod. RDAP versus WHOISWhy structured RDAP is preferred and when a controlled WHOIS fallback is useful. CIDR and subnet-mask cheat sheetA durable reference for IPv4 prefixes, host counts, wildcard masks and subnet planning. Private and reserved IP rangesDistinguish private, loopback, link-local, documentation and globally routable addresses. Reverse DNS and FCrDNSHow PTR lookup and forward-confirmed reverse DNS are used in operations and email. IDN, Punycode and mixed-script domainsRead internationalized domain names safely without treating every non-ASCII label as suspicious.