Native IP Reverse DNS Resolution|Native IP Reverse DNS Resolution Methodology and Verification Steps

First, what is reverse DNS resolution?

Reverse DNS resolution is commonly known as theFind the corresponding domain name by IP address. For example, when you find that a certain IP frequently accesses your server, you can know which service provider or organization it belongs to by this operation. For scenarios where proxy IPs are used, the reverse resolution result directly affects the IP'sCredibility and business compatibilityThe

Many platforms will determine whether an IP is a server room IP by the reverse parsing results. for example, some e-commerce sites will intercept registration requests for data center IPs, and theNative Residential IPThe result of reverse parsing usually containsBroadband Operator Information(e.g. comcast, telefonica, etc.), it is easier to pass platform validation.

Second, proxy IP reverse resolution practice process

When performing reverse DNS resolution using a proxy IP, it is critical that theEnsure the authenticity of the proxy channel. Here's an example of ipipgo's residential agent to demonstrate the complete steps:

Step 1: Establish a proxy connection

To get a residential proxy via the API provided by ipipgo (HTTP/HTTPS/SOCKS5 protocols are supported), it is recommended to choose theStatic Residential IPto ensure parse stability. Example of connection parameters:

Step 2: Execute the reverse resolve command

Enter in the command line tool (common to Windows/Mac/Linux):

nslookup -type=PTR [destination IP]

Note to self:The command must be executed through a proxy networkOtherwise, it detects the local network environment. When using the ipipgo proxy, it is recommended to pair it with its providedNative API Debugging ToolsAutomatically binds proxy settings.

Step 3: Verify Parsing Results

Typical parsing results for quality residential agents should be included:

• ISP operator name (e.g. "att.net")
• Geographical indications (e.g. "nyc.us")
• Dynamic allocation markers (e.g. "dynamic")

III. Special Scenario Handling Programs

run intoNo resolution recordmaybeServer Room SignageWhen doing so, the following program is recommended:

Option 1: Change IP type

Immediately switch in the ipipgo console to theMobile Cellular IPThe reverse resolution records of such IPs generally contain information about the operator's base station, which is suitable for highly sensitive service scenarios.

Option 2: Multi-Layer Proxy Authentication

via ipipgo'smulti-entry IP pool(Support 240+ country nodes), multi-location resolution comparison for the same target IP, excluding local DNS cache interference.

IV. QA High Frequency Questions and Answers

Q：What should I do if the result of reverse parsing shows "hostname not found"?
A: First check whether the proxy connection is effective, it is recommended to use the ipipgo provided by theIP Authenticity Detection InterfaceVerify that the proxy is in effect. If you confirm that the proxy is effective, the target IP may not have PTR records set, so it is recommended that you change to another residential IP for testing.

Q: Should I choose dynamic IP or static IP for reverse resolution?
A: Dynamic IPs are better suited to the needs ofHigh Frequency Replacement IPbusiness (e.g., crawlers), and static IPs are not useful when requiringLong-term maintenance sessionsThe performance of the scenarios (e.g. account management) is better. ipipgo supports real-time switching between the two modes.

Q: Does it support batch reverse parsing?
A: Available through ipipgo'sBatch Task InterfaceWith the automatic rotation mechanism of its IP pool, it can concurrently process resolution requests from up to 500 IPs at a single time.

V. Why choose ipipgo?

The three main advantages of ipipgo are especially prominent in reverse DNS resolution scenarios:

1. Real residential environmentAll IPs come from home broadband networks, and reverse parsing results naturally contain ISP information.
2. Protocols are fully supportedPerfectly compatible with DNS-over-HTTPS and other new protocols, avoiding the problem of protocol interception by traditional proxies.
3. Precision positioning capabilitiesIP library covering 90 million+ residential segments worldwide, accurately matching the characteristics of carriers in the target region.

The above method, combined with ipipgo's proxy service, can effectively solve the reverse parsing verification needs in various business scenarios. It is recommended to verify the parsing results through small-scale testing before gradually expanding the business scale.