DANE Record Validator validates DANE/TLSA DNS records used for certificate authentication, providing security analysis and best practice recommendations.

Data Masking is a powerful tool for detecting and masking sensitive information in text. It can identify and redact emails, phone numbers, SSNs, credit cards, IP addresses, URLs, and dates.

Date Calculator is a simple tool for calculating date differences. It returns the calculated date difference based on the dates provided.

Daylight Duration Calculator computes sunrise, sunset times, and total daylight hours for any geographic location and date using astronomical algorithms.

Dice Roller is a tool for rolling dice using standard RPG notation (XdY format). It supports multiple dice, various die sizes, modifiers, and provides statistics including min, max, average, and theoretical values for gaming and simulations.

Dictionary is a simple tool for getting word definitions. It returns the definition a word.

Did You Mean is a simple tool for correcting spelling mistakes. It returns the corrected text.

Disposable Phone Number Checker is an API that checks whether a given phone number is a known disposable or temporary number. Useful for fraud prevention, user verification, and security.

Distance Calculator is a simple tool for calculating the distance between two locations. It returns the distance in miles and kilometers.

DKIM Validator checks the DomainKeys Identified Mail (DKIM) DNS records for a domain to verify that they are present and correctly formatted.

DMARC Validator checks the Domain-based Message Authentication, Reporting and Conformance (DMARC) record for a domain to ensure it is correctly configured.

D&D Generator creates random content for tabletop role-playing games including characters, NPCs, monsters, treasure, encounters, taverns, and quests.

DNS Lookup is a simple tool for looking up the DNS records of a domain. It returns the A, MX, and other records of the domain.

DNS Propagation Checker verifies if DNS changes have propagated across multiple global DNS servers. It queries DNS servers worldwide to show the current state of your DNS records.

DNSSEC Checker validates the DNSSEC (Domain Name System Security Extensions) configuration of a domain. It verifies that DNS responses are authenticated and haven't been tampered with.

Dog Breeds is a simple tool for getting information about dog breeds. It returns information such as breed name, temperament, lifespan, and more.

Domain Availability Checker is a simple tool for checking the availability of a domain. It returns if the domain is available or not.

Domain Expiration Checker is a simple tool for checking the expiration date and age of a domain. It returns the expiration date and age of the domain provided.

Due Date Calculator estimates pregnancy due dates using either last menstrual period or conception date, providing comprehensive pregnancy timeline information.

Earnings Report is a tool for retrieving company financial data including income statement, balance sheet, and cash flow data from SEC filings. It supports lookup by ticker or CIK with optional year and quarter filters.