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Head-to-head · Domain Registration APIs

OpenSRS vs RRPproxy REST API

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score OpenSRS #4 in Domain Registration APIs 8.9/10 Free plan Free plan✓ 0 of 6 features Visit OpenSRS
RRPproxy REST API #6 in Domain Registration APIs 8.7/10 From €75 ✓ 6 of 6 features Visit site

OpenSRS leads on 1 check, RRPproxy REST API on 0, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOpenSRS · 8.9/10
  • Free planonly OpenSRS
  • Most featuresRRPproxy REST API · 6 of 6

OpenSRS scores higher on our rubric for domain registration apis: 8.9 against 8.7 out of 10; our editors rank them #4 and #6.

OpenSRS offers free plan; RRPproxy REST API doesn't.

OpenSRS is the better fit for established resellers wanting storefront and APIs. RRPproxy REST API is the better fit for API-first teams needing sandboxed bulk workflows.

  • OpenSRS fits best

    Established resellers wanting storefront and APIs

  • RRPproxy REST API fits best

    API-first teams needing sandboxed bulk workflows

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature OpenSRS 8.9/10 Visit ↗ RRPproxy REST API 8.7/10 Visit ↗
At a glance
Editor score 8.9 8.7
Ranking #4 in Domain Registration APIs #6 in Domain Registration APIs
Best for Established resellers wanting storefront and APIs API-first teams needing sandboxed bulk workflows
Pricing model Free plan + paid Paid
Starting price — From €75
Free plan ✓ (best) —
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Live chat, Phone, Tickets, Docs · 24/7 Email, Phone, Docs, Tickets
Integrations 12 integrations 4 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features OpenSRS 0/6 · RRPproxy REST API 6/6
Domain search API Not checked yet ✓ (best)
Bulk registration Not checked yet ✓ (best)
Transfer management Not checked yet ✓ (best)
Renewal management Not checked yet ✓ (best)
Premium domains Not checked yet ✓ (best)
Sandbox environment Not checked yet ✓ (best)
Our review
Pros
  • Domain, TLS/SSL, DNS, transfer, renewal, and management APIs
  • White-label Storefront with customer self-service portals
  • Bulk operations, WHMCS modules, Stripe, and reseller integrations
  • OpenAPI 3.0 REST API covers registration, transfers, renewals, and billing
  • Bulk registration workflows and premium-domain management support reseller operations
  • OT&E sandbox plus WHMCS, HostBill, Blesta, and Control Panel integrations
Cons
  • Pricing varies by TLD and reseller tier
  • The platform is oriented toward reseller and platform businesses
  • Advanced capabilities require choosing among multiple pricing tiers
  • Requires a €75 initial prepaid account balance to activate service
  • No free plan is available
  • Domain pricing varies by TLD and reseller tier
Our verdict

OpenSRS is Tucows’ wholesale domain reseller platform for hosting companies, website builders, ecommerce platforms, agencies, software companies, and internet service providers. It supports domain registration, transfers, renewals, DNS…

Read the review →

RRPproxy REST API is a domain-reseller API for teams that want to embed domain services into their own platforms. It is aimed at domain resellers, hosting providers, IT service providers, registrars, and domain investors. The API covers…

Read the review →
  1. OpenSRSDomain Registration APIs 8.9Free plan
  2. RRPproxy REST APIDomain Registration APIs 8.7From €75

Strengths and trade-offs

  • OpenSRS — where it wins

    • Domain, TLS/SSL, DNS, transfer, renewal, and management APIs
    • White-label Storefront with customer self-service portals
    • Bulk operations, WHMCS modules, Stripe, and reseller integrations

    Where it doesn't

    • Pricing varies by TLD and reseller tier
    • The platform is oriented toward reseller and platform businesses
    • Advanced capabilities require choosing among multiple pricing tiers

  • RRPproxy REST API — where it wins

    • OpenAPI 3.0 REST API covers registration, transfers, renewals, and billing
    • Bulk registration workflows and premium-domain management support reseller operations
    • OT&E sandbox plus WHMCS, HostBill, Blesta, and Control Panel integrations

    Where it doesn't

    • Requires a €75 initial prepaid account balance to activate service
    • No free plan is available
    • Domain pricing varies by TLD and reseller tier
  • OpenSRS8.9/10 · Free plan

    A reseller platform combining domain APIs, white-label sales, and operational automation.

    Visit OpenSRSFull verdict →
  • RRPproxy REST API8.7/10 · From €75

    A broad domain-reseller API with bulk workflows, integrations, and an OT&E sandbox.

    Visit siteFull verdict →

More comparisons

All domain registration APIs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update