IP 转 PTR / 区域记录生成器IP to PTR / zone record generator

本地生成反向名称和完整区域文件记录，支持 IDN 目标与 TTL 校验；在线解析是独立的可选步骤。Generate reverse names and complete zone-file records locally with IDN target and TTL validation. An online resolver query is a separate opt-in step.

配置Configuration

可选：实时 PTR 查询Optional live PTR query

此步骤通过 HTTPS 向 Cloudflare 或 Google 发送反向域名；所选服务商会看到连接 IP。不会修改 PTR 配置。超时为 10 秒。This sends the reverse name to Cloudflare or Google over HTTPS; the selected provider sees your connection IP. It does not configure a PTR record. Timeout: 10 seconds.

如何理解结果Understand the result

生成反向名称在本地完成，不会配置 DNS。实时 PTR 查询是独立、需同意的联网步骤。Generating a reverse name is local and does not configure DNS. Live PTR lookup is a separate, consented network step.

原理、限制与隐私说明How it works, limitations & privacy

IPv4 在 in-addr.arpa 下倒序排列字节；IPv6 展开为 32 个十六进制半字节后在 ip6.arpa 下倒序排列。反向名称和目标均附根点，TTL 须为 0–2147483647 秒。IPv4 reverses octets under in-addr.arpa; IPv6 expands to 32 nibbles then reverses them under ip6.arpa. The reverse owner and target both include the final root dot. TTL must be 0–2147483647 seconds.
此处生成完整记录名称的区域记录，不生成 RFC 2317 无类别委派或前缀反向区域。只有地址提供方或反向区域管理者才能发布。IDN 目标转换为 ASCII DNS 形式，并拒绝非法标签。This generates a whole-owner zone record, not RFC 2317 classless delegation or a prefix reverse zone. Only the address provider or reverse-zone operator can publish it. IDN targets are converted to ASCII DNS form; illegal labels are rejected.