Dev tools · alternatives · 2026

24 alternatives to Subdomains Lookup

Instantly returns the subdomains of 582 million domain names

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Subdomains Lookup launched in 2021; newer entries below may have overtaken it.

1. 1
   Dofo.com▲364

   Google of domain names

   2018 · its alternatives →

2. 2
   One Word Domains 2.0▲253

   Database of 1.2M+ available one-word domains

   2022 · its alternatives →

3. 3
   find.domains▲18

   A free directory of 23M+ available domains across 500+ TLDs

   2023 · its alternatives →

4. 4KT
   Keyword Tool to Find Available Domain Names▲61

   2011 · domaingroovy.com · its alternatives →

5. 5
   dailydomains.io▲169

   Handpicked domains, delivered to your inbox

   2023 · its alternatives →

6. 6
   SEO Domain Finder▲66

   Easily find high-authority expired and deleted domains

   2023 · its alternatives →

7. 7
   Subdomain Center▲1

   World's Largest Subdomain Database

   Aug 2026 · subdomain.center · its alternatives →

8. 8
   ICanHasDomain▲79

   Available domain names no one knows, until now

   2021 · its alternatives →

9. 9
   One Word Domain Name Generator▲65

   Easiest way to find one word domain names

   2022 · its alternatives →

10. 10
    .dotisto▲65

    Blazing fast domain search with 1200+ TLDs

    2023 · its alternatives →

11. 11
    Domain Availability Checker▲78

    Check domain and compare prices of best registrars

    2022 · its alternatives →

12. 12
    Yesterday's Domains▲77

    Find 100s of hand-picked expired domains, daily

    2023 · its alternatives →

13. 13
    DomainSnap - Perfect Domain Name Finder▲16

    Find your perfect domain name instantly ( 1200+ TLDs)

    2024 · its alternatives →

14. 14
    Yesterday's Domains▲83

    Find 100s of hand-picked expired domains, daily

    2023 · its alternatives →

15. 15
    digga – DNS, RDAP/WHOIS, subdomains and more in one lookup▲6

    Free domain lookup for DNS records, RDAP, WHOIS, subdomains, IPs, and email security. Research any domain in one fast report.

    Jul 2026 · digga.dev · its alternatives →

16. 16
    GoneDomains▲17

    Get premium domains faster competitors in daily emails

    2025 · gone.domains · its alternatives →

17. 17
    Biggest Internet Domains Database▲5

    All Internet Domains (199 million+) – 1Gb

    2021 · its alternatives →

18. 18
    Free Domain Tool▲14

    Domain availability checker

    2025 · domainaide.com · its alternatives →

19. 19IS
    I Scraped Hacker News for TLD Popularity▲68

    2023 · v01.io · its alternatives →

20. 20PS
    Popular site subdomains▲8

    2016 · github.com · its alternatives →

21. 21
    GoneDomains▲29

    Find and grab domains with a past

    2024 · gone.domains · its alternatives →

22. 22
    GitHub▲6

    subdomain-scanner200ok

    2025 · github.com · its alternatives →

23. 23
    Domain Details - Monitoring made simple▲20

    Find & Monitor Domain Registration Changes

    2024 · domaindetails.com · its alternatives →

24. 24
    Scan Domains▲16

    Your daily toolkit for everything related to domains.

    2024 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →