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While creating the new record with abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl as my subdomain I'm getting the below error.

(InvalidChangeBatch 400: DomainLabelTooLong (Domain label is too long) encountered with 'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl')

From AWS Documentation i found the below statement.

The total length of a domain name cannot exceed 255 bytes, including the dots.

FYI my root domain length is 20 , 20+ 64 (subdomain) also not exceeds this 255 bytes.

Anyone got the issue?

DilLip_Chowdary
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1 Answers1

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The problem is not with the total length of your domain name, but the length of your subdomain. From the same documentation page:

Domain names (including the names of domains, hosted zones, and records) consist of a series of labels separated by dots. Each label can be up to 63 bytes long.

In this case, your subdomain name abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl is one such label. It's 64 characters long and therefore exceeds the 63 byte limit.

chamal
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