- What's New
- Function Overview
- Service Overview
- Getting Started
-
User Guide
- Public Zones
- Private Zones
- Record Sets
- PTR Records
- Intelligent Resolution
- Resolver
- Permissions Management
- Using CTS to Collect DNS Key Operations
- Access Logging
- Quota Adjustment
- Best Practices
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- APIs
- Examples
- Permissions Policies and Supported Actions
- Appendix
- SDK Reference
-
FAQs
-
DNS Overview
- Will I Be Billed for the DNS Service?
- How Many Zones, PTR Records, and Record Sets Can I Create?
- What Are Huawei Cloud DNS Servers?
- What Are Huawei Cloud Private DNS Server Addresses?
- What Are the Differences Between Public and Private Domain Names?
- Does DNS Support IPv6?
- Does DNS Support Explicit and Implicit URLs?
- Does DNS Support Dynamic Domain Name Resolution?
- Does DNS Support Wildcard Entries?
- What Is TTL?
- How Many Domain Name Levels Does DNS Support?
- How Are Zones Queried to Resolve a Domain Name?
- What Are the Priorities of Resolution Lines?
- Why Was the Email Address Format Changed in the SOA Record?
- What Is CAA?
- Why Should I Set Priority For an MX Record Set?
- Can DNS Point a Domain Name to a Specific Port?
- Invalid Domain Resolution
- Website Access Failures
-
Public Zones
- Why Is a Message Indicating Conflict with an Existing Record Set Displayed When I Add a Record Set?
- How Do I Handle the Conflict Between CNAME and MX Record Sets?
- How Do I Add Record Sets to Subdomains?
- Which IP Address Is Returned for the Domain Name If There Are Multiple IP Addresses in a Record Set?
- Can I Modify a Zone?
- Can DNS Translate a Domain Name to IP Addresses of On-premises Servers or Third-Party Servers?
- How Can Multiple Domain Names Be Linked to the Same Website?
- Configuring Weighted Routing
- Can DNS Resolve a Domain Name that Has Not Been Licensed?
- Does DNS Support Dynamic Domain Name Resolution?
- How Do I View and Change the DNS Servers of a Domain Name?
-
Private Zones
- Why Is a Message Indicating Conflict with an Existing Record Set Displayed When I Add a Record Set?
- How Do I Change Default DNS Servers of an ECS to Huawei Cloud Private DNS Servers?
- How Can I Access an ECS Using Its Host Name?
- How Can I Map the Private IP Address of an ECS to a Domain Name?
- How Can I Use a Private Domain Name to Route Internet Traffic?
- Can I Use Private Domain Names Across Regions?
- Do I Need to Register Private Domain Names?
- Will a Deleted VPC Be Automatically Disassociated from the Private Zone?
- Are Private DNS Server Addresses the Same for All Users?
- What Are the Restrictions on Concurrent Private DNS Requests?
- Reverse Resolution
- Domain Transfer
-
DNS Overview
- Videos
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Overview
- Getting Started
- Private Zone
- Record Set
- PTR Record
- Permissions Management
- Key Operations Recorded by CTS
- Quota Adjustment
- FAQs
- Change History
- API Reference (ME-Abu Dhabi Region)
-
User Guide (Paris Region)
- Overview
- Getting Started
- Public Zones
- Private Zones
- Record Sets
- PTR Records
- Intelligent Resolution
- Permissions Management
- Key Operations Recorded by CTS
- Quota Adjustment
-
FAQ
-
DNS Overview
- Will I Be Billed for the DNS Service?
- How Many Zones, PTR Records, and Record Sets Can I Create?
- What Are DNS Servers?
- What Are the Differences Between Public and Private Domain Names?
- Does DNS Support IPv6?
- Does DNS Support Explicit and Implicit URLs?
- Does DNS Support Dynamic Domain Name Resolution?
- Does DNS Support Wildcard Entries?
- What Is TTL?
- How Many Domain Name Levels Does DNS Support?
- How Are Zones Queried to Resolve a Domain Name?
- Why Was the Email Address Format Changed in the SOA Record?
- What Is CAA?
- Why Should I Set Priority For an MX Record Set?
- Can DNS Point a Domain Name to a Specific Port?
-
Public Zones
- How Do I Add Record Sets to Subdomains?
- Which IP Address Is Returned for the Domain Name If There Are Multiple IP Addresses in a Record Set?
- What Can I Do If There Is Message Indicating that the Public Zone Already Exists?
- Can I Modify a Zone?
- How Can Multiple Domain Names Be Linked to the Same Website?
- Configuring Weighted Routing
-
Private Zones
- How Can I Map the Private IP Address of an ECS to a Domain Name?
- Can I Use Private Domain Names Across Regions?
- Do I Need to Register Private Domain Names?
- Will a Deleted VPC Be Automatically Disassociated from the Private Zone?
- Are Private DNS Server Addresses the Same for All Users?
- What Are the Restrictions on Concurrent Private DNS Requests?
- Reverse Resolution
-
DNS Overview
- Change History
- API Reference (Paris Region)
-
User Guide (Kuala Lumpur Region)
- Overview
- Getting Started
- Private Zone
- Record Set
- Permissions Management
- Key Operations Recorded by CTS
- Quota Adjustment
-
FAQs
-
DNS Overview
- Will I Be Billed for the DNS Service?
- How Many Zones and Record Sets Can I Create?
- What Are the Private DNS Servers Provided by the DNS Service?
- Does DNS Support Wildcard Entries?
- How Are Zones Queried to Resolve a Domain Name?
- Why Was the Email Address Format Changed in the SOA Record?
- Can DNS Point a Domain Name to a Specific Port?
- Private Zones
-
DNS Overview
- Change History
- API Reference (Kuala Lumpur Region)
- User Guide (Ankara Region)
- API Reference (Ankara Region)
-
User Guide (ME-Abu Dhabi Region)
- Glossary
- General Reference
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Creating a PTR Record
Function
Create a PTR record for an elastic IP address (EIP).
Request
- Parameter description
Table 2 Parameters in the request Parameter
Mandatory
Type
Description
ptrdname
Yes
String
Domain name of the PTR record
A domain name is case insensitive. Uppercase letters will also be converted into lowercase letters.
description
No
String
PTR record description
The value is left blank by default.
ttl
No
Integer
PTR record cache duration (in second) on a local DNS server. The longer the duration is, the slower the update takes effect.
If your service address is frequently changed, set TTL to a smaller value.
The value ranges from 1 to 2147483647.
The default value is 300.
enterprise_project_id
No
String
ID of the enterprise project associated with the PTR record. The value contains a maximum of 36 characters.
The default value is 0.
tags
No
Array of object
Resource tag. For details, see Table 3.
The value is left blank by default.
Table 3 Description of the tags field Parameter
Mandatory
Type
Description
key
Yes
String
Tag key. The key contains 36 Unicode characters at most and cannot be blank. It cannot contain the following characters: =*<>\,|/ nor start or end with a space.
value
No
String
Tag value. Each value contains 43 Unicode characters at most and can be an empty string. It cannot contain the following characters: =*<>\,|/ nor start or end with a space.
- Example request
Create a PTR record for the EIP whose ID is c5504932-bf23-4171-b655-b87a6bc59334:
PATCH https://{DNS_Endpoint}/v2/reverse/floatingips/region_id:c5504932-bf23-4171-b655-b87a6bc59334
{ "ptrdname": "www.example.com", "description": "Description for this PTR record", "ttl": 300, "tags": [ { "key": "key1", "value": "value1" } ] }
Response
- Parameter description
Table 4 Parameters in the response Parameter
Type
Description
id
String
PTR record ID, which is in {region}:{floatingip_id} format
ptrdname
String
Domain name of the PTR record
description
String
PTR record description
ttl
Integer
PTR record cache duration (in second) on a local DNS server. The longer the duration is, the slower the update takes effect.
If your service address is frequently changed, set TTL to a smaller value.
The value ranges from 1 to 2147483647.
The default value is 300.
address
String
EIP
status
String
Resource status
For details, see Resource Status.
action
String
Requested operation on the resource
The value can be CREATE, UPDATE, DELETE, or NONE.
NONE indicates that no operation will be performed.
links
Object
Link to the current resource or other related resources.
When a response is broken into pages, a next link is provided to retrieve all results. For details, see Table 5.
- Example response
{ "id": "region_id:c5504932-bf23-4171-b655-b87a6bc59334", "ptrdname": "www.example.com.", "description": "Description for this PTR record", "address": "10.154.52.138", "action": "CREATE", "ttl": 300, "status": "PENDING_CREATE", "links": { "self": "https://Endpoint/v2/reverse/floatingips/region_id:c5504932-bf23-4171-b655-b87a6bc59334" } }
Returned Value
If a 2xx status code is returned, for example, 200, 202, or 204, the request is successful.
For details, see Status Code.
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