Invention Grant
- Patent Title: Domain name system CNAME record management
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Application No.: US14676631Application Date: 2015-04-01
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Publication No.: US10069787B2Publication Date: 2018-09-04
- Inventor: Lee Hahn Holloway , Ray Raymond Bejjani , Dane Orion Knecht , Matthew Browning Prince , John Graham-Cumming
- Applicant: CLOUDFLARE, INC.
- Applicant Address: US CA San Francisco
- Assignee: CLOUDFLARE, INC.
- Current Assignee: CLOUDFLARE, INC.
- Current Assignee Address: US CA San Francisco
- Agency: Nicholson De Vos Webster & Elliott LLP
- Main IPC: G06F15/173
- IPC: G06F15/173 ; H04L29/12

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.
Public/Granted literature
- US20150281168A1 DOMAIN NAME SYSTEM CNAME RECORD MANAGEMENT Public/Granted day:2015-10-01
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