Product Blog

We are excited to introduce DNS Chronicle API, the latest addition to our passive DNS offerings. This API release enables use cases such as proactive threat detection and attack surface discovery by providing visibility into the complete DNS history of a domain or an IP address.

With DNS Chronicle API, users can perform two types of passive DNS queries, namely:

• Forward search: Using any FQDN as a search string, users can retrieve its historical A and AAAA records.

• Reverse search: Users can obtain a list of all the FQDNs associated with a given IP address.

Name servers (NSs) play a crucial role in how the Internet works, directing traffic to the correct destinations. Specifically, NS records tell recursive resolver servers which authoritative NS is responsible for a specific domain name. The resolver would then contact the authoritative NS to obtain the domain’s corresponding IP address.

While having a small number of entities control a large portion of the DNS can increase efficiency, it could also result in choke points, where a single disruption could significantly impact a large portion of Internet traffic.

No matter how stealthy attackers try to be, they almost always leave a trail behind—digital breadcrumbs known as “indicators of compromise (IoCs)” after a cyber attack or an attempted intrusion.

Let’s take the Black Basta ransomware attacks as an example. Cybersecurity authorities like the Cybersecurity and Infrastructure Security Agency (CISA) identified hundreds of IoCs associated with this ransomware-as-a-service (RaaS) variant. These IoCs include cyber resources like file hashes, domain names, and IP addresses, and serve as digital footprints pertaining to the attackers’ activities. They provide invaluable clues for cybersecurity professionals, helping them understand what happened and prevent similar attacks in the future.

Email remains a vital part of modern communication, with 347.3 billion emails sent and received daily worldwide in 2023. For each email to reach its intended recipient, mail exchange (MX) records direct it to the correct mail server.

While individual email users can create their own mail servers, most people use email services from established email service providers (ESPs) to avoid the complexity of running their own servers. These services typically provide storage, security features, and user-friendly interfaces, all without burdening users with maintenance.

This project aimed to upload data from DNS_Premium_365 dataset to a local ClickHouse database for efficient, optimized and rapid querying capabilities.

We’re thrilled to announce a significant upgrade to one of our market-leading services, Premium DNS Database Download. We’re expanding the coverage of our full database files from 90 to 365 days, giving users access to as many as 116 billion historical DNS records as of Q2 2024.

We are thrilled to announce that the coverage of our premium DNS Database Download significantly improved over the past few months. The most recent measurement in 2024 showed that the database’s total number of DNS records increased by 578% compared to May 2023. 

The Domain Name System (DNS) is essential for the operation of the Internet. It enables the assignment of hostnames to IP addresses: the numerical identifiers of network nodes (computers, cell phones, IoT devices, etc.). As for the detailed description of the Domain Name System we refer to our Domain Name System primer white paper.