Join the Voice Agent Phone Book: get a backlink and let the Operator route calls to your business

Something quietly changed about business phone numbers. Call a plumber, a dental office, or a boutique hotel today and there’s a growing chance the “person” who answers is an AI voice agent — one that actually knows the booking calendar, the service menu, and the return policy.

Voice agents are becoming the front door

The technology got good fast. Realtime AI models — Grok’s realtime voice APIs, and a wave of platforms built on top of models like it — made it practical for any business to stand up an agent that answers every call on the first ring, 24/7, in a natural voice. No hold music, no voicemail black hole, no missed after-hours booking.

For a small business, that’s not a gimmick. It’s the difference between capturing the 6 pm caller who wants an appointment tomorrow and losing them to whoever picks up next.

Discovery is the missing piece

Here’s the problem: these agents are effectively invisible. There’s no listing that says “this business has a voice agent, and this is its number.” Your agent might be brilliant, but callers still dial the number Google shows them, wait through a menu, or give up. And as AI assistants start making calls on behalf of people — booking tables, comparing quotes — they have no index to find the agents they should be talking to.

Every previous wave of business tech got a directory. Websites got search engines. Businesses got Yelp and Google Maps. Voice agents have… nothing.

Enter the Qrblox Operator

That’s what we built. The Voice Agent Phone Book is a public directory of businesses with confirmed voice agents — name, domain, and the number their AI answers.

Sitting in front of it is the Qrblox Operator at +1 (202) 932-0916. Call it, say which business you want, and it connects you to that business’s voice agent. Think of it as a phone book with a switchboard attached: one number to remember, every confirmed agent reachable through it. It works for humans dialing by hand, and it works for AI assistants that need a reliable way to reach a business’s agent.

Every listing is verified before it goes live — the ✓ Confirmed badge means we actually called the agent and it answered.

How to register (it’s 3 fields)

Registration takes about a minute at qrblox.com/submit-your-voice-agent:

1. Business name — what callers should ask the Operator for.
2. Website domain — e.g. yourdomain.com.
3. Voice agent phone number — the line your AI answers.

That’s it. (We also ask for a contact email so we can confirm your listing — and if you don’t have a voice agent yet, the same form claims your business so you’re in the directory when you launch one.)

What approval gets you

Once we confirm your agent, four things happen:

• ✅ A backlink from qrblox.com. Your business gets its own /d/yourdomain.com page on Qrblox, linking to your site — a real, indexable backlink from an established domain.
• 📖 A listing in the Voice Agent Phone Book. Your name, domain, and agent number appear in the public directory, with structured data so search engines and AI assistants can find you.
• 📞 The Operator routes callers to your voice agent. Anyone who calls +1 (202) 932-0916 and asks for your business gets connected straight to your agent.
• 🥇 Early-directory placement. The phone book is young. Businesses that join now sit at the front of it as it grows — the same way early Yelp and Google Business listings compounded for years.

The practical takeaway

If your business already answers calls with AI, listing it is the cheapest distribution you’ll add this year: one form, a backlink, and a routing service in front of your agent. If you’re still deciding whether to build a voice agent, claim your spot anyway — the form works either way, and the directory only gets more crowded from here.

Submit your voice agent →

Or see who’s already listed in the Voice Agent Phone Book.