# Edge DNS limits [Edge DNS](/en/documentation/platform/edge-dns/) applies default limits to the fields of a zone, to the fields and values of a record, and to the zones and queries each plan includes every month. To request an increase, contact the [technical support](/en/documentation/support/) team. --- ## Default limits Each value below applies to one zone, one record, or one list request. A request past an API bound returns `400` with an `errors` array, and the zone or record stays as it was. Each API error is quoted as its code, its title, and its `detail` sentence. | Scope | Limit | Past the limit | | -------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Zone `name` | 1 to 50 characters | `10046` `Max Length`: `Ensure this field has no more than 50 characters.` | | Zone `domain` | Up to 200 characters, the bound the API declares. The domain must end in a valid top-level domain, be hosted by no other zone in Azion, and it is fixed at creation. | `19035` `Invalid Domain TLD`: `Your domain must use a valid TLD.` When another account hosts the domain, `19001` `Domain Already In Use`: `Domain Belongs to Another Account.` When your account already hosts it, `10012` `Unique Field`: `This field must be unique.` An update that sends `domain` gets `19036` `Domain Cannot Be Modified`: `The domain cannot be changed in update operations. Please create a new record instead.` In the Console, a domain whose last label is not 2 to 6 letters shows `Invalid domain`. | | Record `name` | Up to 255 characters | `10046` `Max Length`: `Ensure this field has no more than 255 characters.`, together with `10076` `Invalid Pattern Match.` | | Label in a record `name` | Up to 63 characters per dot-separated label | `10076` `Invalid Pattern Match.` | | Record `ttl`, in the API | 1 to 2147483647 seconds | `0` gets `10050` `Min Value`: `Ensure this value is greater than or equal to 1.` A value above 2147483647 gets `10068` `Max Value`: `Ensure this value is less than or equal to 2147483647.` | | **TTL (seconds)**, in the Console | 0 to 604800 seconds. The field pre-fills `3600`. | The field shows `TTL must be less than or equal to 604800`, or `TTL must be greater than or equal to 0`. | | `ttl` of an ANAME record | `20` only. The Console pre-fills 20 when you select ANAME. | Any other value, including the default `3600`, gets `19011` `Invalid TTL For QTYPE`: `The TTL value is not valid for the selected record type.` | | Values in one A, AAAA, ANAME, DS, MX, or NS record | Up to 10 values in `rdata` | `19007` `Invalid RData Size`: `The 'rdata' cannot contain more than 10 items for the selected record type.` | | Values in one CNAME or PTR record | Exactly 1 value in `rdata` | `19006` `Invalid RData For CNAME Record`: `The 'rdata' cannot contain more than one item when 'type' is 'CNAME'.` A PTR record gets the same code, title, and detail. | | Values in one TXT, CAA, or SRV record | More than 10 values are accepted | No 10-value bound applies. | | SRV records on one name | 1 record. Its values have no 10-value bound. | A second SRV record on the name gets `19004` `Record Already Exists`: `There is already another record matching those data.` | | TXT value | Up to 1,000 characters per value | `19024` `Invalid TXT Record Answer Size`: `You need to provide an answer with less than 1000 characters.` A value of exactly 1,000 characters is accepted. | | Record `weight` | 0 to 255. A record with weight `0` is kept and never answered. | `10068` `Max Value`: `Ensure this value is less than or equal to 255.` In the Console, **Weight** shows `Weight must be less than or equal to 255`. | | Record `description` | Up to 45 characters | `10046` `Max Length`: `Ensure this field has no more than 45 characters.` The Console **Description** helper states the 45-character limit but does not check it, so the API refuses the longer value on **Save**. | | Items per list page, `page_size` | Up to 100 | `10097` `Invalid Page Size`: `Page size must be between 0 and 100.` | To read a list longer than one page, set `page_size` to 100 and move through the pages with the `page` query parameter. For each error and its fix, refer to [Zones and records](/en/documentation/platform/edge-dns/zones-and-records/#errors). --- ## Included usage per plan Edge DNS is billed on two metrics: Zones and Queries. Hosted zones and the queries they receive can generate usage charges. Each plan includes the monthly amounts below. | Metric | Hobby | Pro | Enterprise | | ------- | ---------- | ---------- | ---------- | | Zones | 10 | 10 | Custom | | Queries | 1M / month | 1M / month | Custom | The plan comparison is at [Azion pricing](https://www.azion.com/en/pricing/). For the per-unit rates, refer to [Pricing](/en/documentation/fundamentals/pricing/#edge-dns). The [Terms of Service](/en/documentation/agreements/tos/) count Zones as the daily average number of active zones during the monthly billing cycle, and Queries as the number of DNS queries Edge DNS processes. In [Real-Time Metrics](/en/documentation/platform/real-time-metrics/secure-dashboards/#edge-dns), the **Edge DNS** tab holds the **Standard Queries** dashboard, whose **Total Queries** chart counts the queries your zones receive. --- ## Related resources - [Zones and records](/en/documentation/platform/edge-dns/zones-and-records.md): Every zone and record field these limits apply to, and the API errors with their fixes. - [Record types](/en/documentation/platform/edge-dns/record-types.md): The value format and the per-type rules of each of the 11 record types. - [Troubleshoot Edge DNS](/en/documentation/platform/edge-dns/troubleshooting.md#the-api-refuses-a-record-with-400): What to check when the API refuses a record with a 400 error. - [Pricing](/en/documentation/fundamentals/pricing.md#edge-dns): The per-unit rates for the zones and queries past the amounts each plan includes.