The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2025
Filed:
Sep. 13, 2021
Verisign, Inc., Reston, VA (US);
Michael Kaczmarek, Great Falls, VA (US);
Eric Osterweil, Fairfax, VA (US);
VeriSign, Inc., Reston, VA (US);
Abstract
In one embodiment, a global domain name system (DNS) server processes a DNS query based on an internal network policy. Upon receiving a DNS query that is associated with a source IP address, the global DNS server identifies a client subnet based on the DNS query. The client subnet is associated with an internal device on an internal network. The global DNS server selects an internal network policy from multiple predetermined policies based on the source IP address and the client subnet. The global DNS server then tailors one or more DNS resolution operations that generate a response to the DNS query based on the selected internal network policy. Advantageously, the client subnet provides the global DNS server with visibility into the internal network. Such visibility enables the global DNS server to apply policies selectively at the granularity of individual devices on the internal network.