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Head-to-head · Dynamic DNS Services

Dynu Dynamic DNS vs YDNS

  • Updated Sep 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Dynu Dynamic DNS #1 in Dynamic DNS Services 9.8/10 Free plan · paid from $9.99/yr Free plan✓ 5 of 5 features Visit Dynu
YDNS #8 in Dynamic DNS Services 6.7/10 Free plan Free plan✓ 4 of 5 features Visit YDNS

Dynu Dynamic DNS leads on 1 check, YDNS on 0, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreDynu Dynamic DNS · 9.8/10
  • Free planboth
  • Most featuresDynu Dynamic DNS · 5 of 5

Dynu Dynamic DNS scores higher on our rubric for dynamic dns services: 9.8 against 6.7 out of 10; our editors rank them #1 and #8.

Dynu Dynamic DNS offers wildcard records; YDNS doesn't publish it.

Dynu Dynamic DNS is the better fit for free DDNS with many hosts and clients. YDNS is the better fit for free DDNS with unlimited fair-use hosts.

  • Dynu Dynamic DNS fits best

    Free DDNS with many hosts and clients

  • YDNS fits best

    Free DDNS with unlimited fair-use hosts

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature Dynu Dynamic DNS 9.8/10 Visit ↗ YDNS 6.7/10 Visit ↗
At a glance
Editor score 9.8 6.7
Ranking #1 in Dynamic DNS Services #8 in Dynamic DNS Services
Best for Free DDNS with many hosts and clients Free DDNS with unlimited fair-use hosts
Pricing model Free plan + paid Free
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Mobile, Browser extension Cloud
Platforms Web, Windows, macOS, Linux, iOS, Android, Chrome extension Web
Support Email, Phone, Tickets, Community, Docs Email, Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Dynu Dynamic DNS 5/5 · YDNS 4/5
IPv6 support ✓ ✓
Custom domains ✓ ✓
Router support ✓ ✓
API access ✓ ✓
Wildcard records ✓ (best) Not published
Specs
Hostname limit 200 hostnames Not published
Update interval 2 minutes Not published
Our review
Pros
  • Free service with up to 200 hostnames and unlimited DNS queries
  • Supports IPv4, IPv6, custom domains, wildcard records, and broad DNS types
  • Clients and integrations cover desktop, mobile, browsers, routers, and firewalls
  • Unlimited hosts per user under a fair-use model
  • Custom-domain DNS hosting with DNSSEC support
  • HTTP API plus Bash and MikroTik updater options
Cons
  • DNSSEC, logging, backup, and restore require a paid membership
  • Advanced API and sub-accounts are limited to the Corporate tier
  • The free plan does not include priority or dedicated support
  • Free service has no paid tier for additional features or support
  • Setup may require API or updater configuration
  • Focused on DNS hosting rather than broader network management
Our verdict

Dynu Dynamic DNS maps hostnames to changing IPv4 or IPv6 addresses for home servers, remote access, webcams, game servers, and other internet-connected devices. It suits users who need free dynamic DNS with multiple hostnames,…

Read the review →

YDNS is a free DNS hosting service for people who need dynamic hostnames for home networks, DNS hosting for custom domains, or record updates through an HTTP API. Its Free plan combines Dynamic DNS, DNS hosting, Custom-domain DNS hosting,…

Read the review →
  1. Dynu Dynamic DNSDynamic DNS Services 9.8Free plan · paid from $9.99/yr
  2. YDNSDynamic DNS Services 6.7Free plan

Strengths and trade-offs

  • Dynu Dynamic DNS — where it wins

    • Free service with up to 200 hostnames and unlimited DNS queries
    • Supports IPv4, IPv6, custom domains, wildcard records, and broad DNS types
    • Clients and integrations cover desktop, mobile, browsers, routers, and firewalls

    Where it doesn't

    • DNSSEC, logging, backup, and restore require a paid membership
    • Advanced API and sub-accounts are limited to the Corporate tier
    • The free plan does not include priority or dedicated support
  • YDNS — where it wins

    • Unlimited hosts per user under a fair-use model
    • Custom-domain DNS hosting with DNSSEC support
    • HTTP API plus Bash and MikroTik updater options

    Where it doesn't

    • Free service has no paid tier for additional features or support
    • Setup may require API or updater configuration
    • Focused on DNS hosting rather than broader network management
  • Dynu Dynamic DNS9.8/10 · Free plan · paid from $9.99/yr

    A feature-rich free DDNS service with broad client, DNS, and API support.

    Visit DynuFull verdict →
  • YDNS6.7/10 · Free plan

    A free DDNS service with custom domains, API updates, DNSSEC, and IPv6 support.

    Visit YDNSFull verdict →

More comparisons

Guides on dynamic DNS services

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update