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. 09, 2019
Filed:
Sep. 04, 2018
Cloudflare, Inc., San Francisco, CA (US);
Lee Hahn Holloway, Santa Cruz, CA (US);
Ray Raymond Bejjani, San Francisco, CA (US);
Dane Orion Knecht, San Francisco, CA (US);
Matthew Browning Prince, San Francisco, CA (US);
John Graham-Cumming, London, GB;
CLOUDFLARE, INC., San Francisco, CA (US);
Abstract
A method and apparatus for managing CNAME records such that CNAME records at the root domain are supported while complying with the RFC specification (an IP address is returned for any Address query for the root record). The authoritative DNS infrastructure acts as a DNS resolver where if there is a CNAME at the root record, rather than returning that record directly, a recursive lookup is used to follow the CNAME chain until an A record is located. The address associated with the A record is then returned. This effectively 'flattens' the CNAME chain. This complies with the requirements of the DNS specification and is invisible to any service that interacts with the DNS server.