Here is a small list of APIs that will be useful for automating various tasks in OSINT:
| Numverify | https://numverify.com | Global Phone Number Validation & Lookup JSON API. Supports 232 countries. | 250 requests FREE || Twillo | https://www.twilio.com/docs/lookup/api | Provides a way to retrieve additional information about a phone number | Free or $0.01 per request (for caller lookup) |
| Plivo | https://www.plivo.com/lookup/ | Determine carrier, number type, format, and country for any phone number worldwide | from $0.04 per request | | Google Maps Geocoding API | https://developers.google.com/maps/documentation/geocoding/overview | convert addresses (like "1600 Amphitheatre Parkway, Mountain View, CA") into geographic coordinates | 0.005 USD per request |
| Postcoder | https://postcoder.com/address-lookup | Find adress by postcode | £130/5000 requests |
| Zipcodebase | https://zipcodebase.com | Lookup postal codes, calculate distances and much more | 5000 requests FREE | v | Openweathermap geocoding API | https://openweathermap.org/api/geocoding-api | get geographical coordinates (lat, lon) by using name of the location (city name or area name) | 60 calls/minute 1,000,000 calls/month FREE |
| DistanceMatrix | https://distancematrix.ai/product | Calculate, evaluate and plan your routes | $1.25-$2 per 1000 elements |
| BGPView | https://bgpview.docs.apiary.io/# | allowing consumers to view all sort of analytics data about the current state and structure of the internet | FREE |
| DNSCheck | https://www.dnscheck.co/api | monitor the status of both individual DNS records and groups of related DNS records | up to 10 DNS records/FREE | | Whois freaks| https://whoisfreaks.com/ | well-parsed and structured domain WHOIS data for all domain names, registrars, countries and TLDs since the birth of internet | $19/5000 requests |
| WhoisXMLApi | https://whois.whoisxmlapi.com | gathers a variety of domain ownership and registration data points from a comprehensive WHOIS database | 500 requests in month/FREE | | Ipstack | https://ipstack.com | Detect country, region, city and zip code | FREE |
| Ipgeolocation.io | https://ipgeolocation.io | provides country, city, state, province, local currency, latitude and longitude, company detail, ISP lookup, language, zip code, country calling code, time zone, current time, sunset and sunrise time, moonset and moonrise | 30 000 requests per month/FREE | | Mylnikov API | https://www.mylnikov.org | public API implementation of Wi-Fi Geo-Location database | FREE |
| Wigle | https://api.wigle.net/ | get location and other information by SSID | FREE | | Binlist.net | https://binlist.net/ | get information about bank by BIN | FREE | v | FDIC Bank Data API | https://banks.data.fdic.gov/docs/ | institutions, locations and history events | FREE |
|Swiftcodesapi | https://swiftcodesapi.com | Verifying the validity of a bank SWIFT code or IBAN account number | $39 per month/4000 swift lookups | | Mailboxlayer | https://mailboxlayer.com/ | Simple REST API measuring email deliverability & quality | 100 requests FREE, 5000 requests in month — $14.49 |
| EmailCrawlr | https://emailcrawlr.com/ | Get key information about company websites. Find all email addresses associated with a domain. Get social accounts associated with an email. Verify email address deliverability. | 200 requests FREE, 5000 requets — $40 |
| Voila Norbert | https://www.voilanorbert.com/api/ | Find anyone’s email address and ensure your emails reach real people | from $49 in month |
| HaveIBeenPwned | https://haveibeenpwned.com/API/v2 | allows the list of pwned accounts (email addresses and usernames) | FREE |
| Psdmp.ws | https://psbdmp.ws/api | search in Pastebin | $9.95 per 10000 requests |
| LeakPeek| https://psbdmp.ws/api | searc in leaks databases | $9.99 per 4 weeks unlimited access | | BTC.com | https://btc.com/btc/adapter?type=api-doc | get information about addresses and transanctions | FREE |
| Blockchair | https://blockchair.com | Explore data stored on 17 blockchains (BTC, ETH, Cardano, Ripple etc) | $0.33 - $1 per 1000 calls | | Shodan | https://developer.shodan.io | IP and DNS information about all devices in the internet | from $59/month |
| Fofa.so | https://fofa.so/static_pages/api_help | IP and DNS information about all devices in the internet | ??? | | VirusTotal | https://developers.virustotal.com/reference | files and urls analyze |Public API is FREE |
| Search4facev | https://search4faces.com/api.html | Search for people in social networks by facial image | $21 per 1000 requests | |Darksearch.io | https://darksearch.io/apidoc | search by websites in .onion zone | FREE | | Aviation Stack | https://aviationstack.com | get information about flights, aircrafts and airlines | FREE |
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