Blogs
Wednesday, October 21, 2026 11:00 AM
51Degrees launches Human Confidence data tool to help identify non-human web traffic
New product enables advertisers, website owners, adtech and more to filter and manage non-human traffic
Precision data and technology company 51Degrees is launching a new product that will help website owners, advertisers and their technology partners to filter and manage non-human traffic in order to save costs, protect their IP and boost the value of their human audiences.
Wednesday, October 21, 2026 9:00 AM
How likely is your traffic to be from real humans?
How to handle the rise of bots and autonomous agents
Human Confidence tells you, in one word and in real time, how sure you can be that a person is viewing the page.
Wednesday, September 23, 2026 2:30 PM
51Degrees launches 51Did, a new Digital Advertising Identifier
51Did is an identifier you can actually check. Check what it does inside your own business, and what changes when it travels.
Almost every digital advertising identifier on the web arrives in a request, gets read, and is assumed genuine by everybody downstream. A copied identifier behaves exactly like a real one, because it is real. 51Did is an identifier you can actually check, signed so anyone receiving it can confirm it is genuine and that the device, browser and connection it was created in have not changed.
Wednesday, September 16, 2026 9:00 AM
Your ads have an audience. Does it have a pulse?
Autonomous AI agents browse in real browsers, on real devices, from real addresses. Here is how to tell whether a human is involved.
There is now a third kind of visitor, and it fits neither box. Autonomous AI agents drive genuine Chrome, on genuine laptops, over genuine residential connections, so nothing in the request is fake and every check you already run passes. HumanConfidence reads eight device and network signals in one call and returns High, Medium, or Low, with the recipe published so you can check the working yourself.
Wednesday, July 29, 2026 3:30 PM
Why preserving the original User-Agent matters
Lowercasing a User-Agent removes information that no detection engine can recover
Applications, proxies, and analytics platforms often lowercase or otherwise normalize User-Agent strings before they are processed. This blog explains why a User-Agent is structured data rather than ordinary text, what is lost when it is modified, and the best practice for keeping device detection accurate.
Tuesday, July 28, 2026 1:30 PM
Naver's robots and crawlers
Research into Naver's approach to scraping web content
This blog explains how Naver’s web crawlers, including Yeti, Ads-Naver, and Blueno, interact with website content. It outlines their different roles, the crawler usage values assigned to each, and how they affect content visibility across Naver’s search and services.
Tuesday, July 7, 2026 1:30 PM
When is CTV not CTV?
Nearly 5% of inventory sold as CTV isn't CTV at all
What actually counts as connected TV? We checked more than 11 million OpenRTB impressions with Device Detection and found nearly 5% of inventory sold as CTV isn't CTV at all, mislabeling that could be costing advertisers close to $2 billion a year.
Tuesday, June 16, 2026 5:00 PM
Apple model number lookup: A-code to iPhone and iPad
Every A-code 51Degrees recognises, in one table.
Your iPhone or iPad has an AXXXX code printed on the back or buried in Settings. It tells you which model the device is, but only if you have the mapping. Here is the full A-code to device-name reference 51Degrees uses, along with a note on how Apple's three different identifiers fit together and where to find each one.
Tuesday, June 16, 2026 1:30 PM
DuckDuckGo's Robots and Crawlers
Research into DuckDuckGo's approach to scraping web content
This blog explains how DuckDuckGo’s web crawlers, including DuckDuckBot and DuckAssistBot, interact with website content. It outlines their different roles, how they follow robots.txt directives, and the management of crawler access and content visibility.
Tuesday, May 19, 2026 5:30 PM
Migrate from MaxMind or IPInfo to 51Degrees in five edits
Same code shape. Richer data.
Reading an MMDB file in your app? Whether it comes from MaxMind GeoLite2 or IPInfo, the same code handles either, and switching to 51Degrees IP Intelligence is a five-edit job. You get a per-address LocationConfidence rating and a richer set of properties to read. Watch the conversion unfold, edit by edit.