# RDAP Browser — Domain names, IP addresses

> Retrieves domain, IP, and AS registration data using the RDAP protocol. (iPhone/iPad app by Viagenie Inc.)

- Source: https://appshunter.io/ios/app/rdap-browser/id1473692572 (this page in markdown: same URL + `.md`)
- Developer: [Viagenie Inc](https://appshunter.io/developer/1401502955)
- Category: Business, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 3 MB
- Languages: English, French, Japanese, Spanish
- Released: 2019-08-22
- Data updated: 2026-06-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rdap-browser/id1473692572/reviews.md

## What is RDAP Browser?

This application provides registration information for domain names, IP addresses and autonomous system numbers, by reaching the autoritative RDAP servers and displaying the results. Displayed information includes registrant, expiration, registrar, registry, DNS servers and DNSSEC details, as well as contact information when available. As RDAP is being deployed by top-level domain registries, not all domain names may return data. RDAP is a replacement of Whois. 
        
        Examples of queries:
        google.com
        206.123.31.0
        206.123.31.0/24
        2620:0:230::
        2620:0:230::/48
        10566

## Key features

- Domain name registration lookup
- IP address registration lookup
- Autonomous System Number lookup
- Displays registrant and expiration details
- Shows registrar and registry information
- Provides DNS and DNSSEC details

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rdap-browser/id1473692572/reviews.md

### 5/5 — Simple and powerful!

*2019-08-27*

Love it! Been waiting for something like that for quite a while!

## Frequently asked questions about RDAP Browser

### What kind of information does RDAP Browser provide?

RDAP Browser provides registration details for domain names, IP addresses, and autonomous system numbers. This includes registrant, expiration, registrar, registry, DNS servers, and DNSSEC information.

### Is RDAP Browser free to use?

Yes, RDAP Browser is completely free to download and use. It does not have any in-app purchases or advertisements.

### What devices does RDAP Browser support?

RDAP Browser is available for iPhone, iPad, and iPod touch devices. It is designed for iOS users.

### How often is RDAP Browser updated?

The latest version of RDAP Browser is 1.3, which was last updated on August 25, 2025. Updates ensure compatibility and performance improvements.

### Does RDAP Browser work offline?

RDAP Browser requires an active internet connection to query the authoritative RDAP servers. It cannot be used offline.

### What is RDAP and how does it differ from Whois?

RDAP (Registration Data Access Protocol) is a modern protocol designed to replace the older Whois protocol. It offers a more standardized and extensible way to retrieve domain registration data.

### Can RDAP Browser find contact information for registrants?

RDAP Browser displays contact information when it is available through the authoritative RDAP servers. Not all domain names may return complete contact details.

### What is the age rating for RDAP Browser?

RDAP Browser has an age rating of 4+. This indicates it is suitable for users of all ages and contains no mature content.

## Version history (last 5 releases)

### 2.0 — 2026-06-18

Redacted values ​​(RFC9537), reliability and usability improvements

### 1.3 — 2025-08-25

support new RIR search and better handle non-existent objects

### 1.2 — 2025-08-22

fix parsing responses from RDAP servers

### 1.1.8 — 2023-04-11

fix parsing of some IP addresses

### 1.1.7 — 2023-04-10

fix bug parsing some IP addresses and ASN

## Apps similar to RDAP Browser

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Autograph +](https://appshunter.io/ios/app/autograph-plus/id509088443) | 2.5 (4) | $1.99 | Business |

## Related topics

[rdap browser](https://appshunter.io/ios/topics/rdap-browser) · [rdap pro](https://appshunter.io/ios/topics/rdap-pro) · [domain name system app](https://appshunter.io/ios/topics/domain-name-system-app)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-20.*