All-in-one IPv4 / IPv6 Address Lookup

AS4538（China Education and Research Network Center） (中国教育网) manages the 110.65.144.0/20 prefix block (approximately 4096 addresses) in the Education Network category. CERNET (China Education and Research Network), the backbone covering national higher education institutions. The IP 110.65.147.238 resides in China Guangdong Shenzhen (timezone Asia/Shanghai); its position within this block determines routing behavior and connectivity characteristics.

No reverse DNS (PTR) record is configured, which is common for dynamically assigned or CGNAT'd addresses but limits reverse verification capability. PTR records are commonly used by mail servers and anti-spam systems to validate connecting IPs — their absence can affect deliverability to strict receivers.

Based on local classification and Spamhaus real-time reputation (Spamhaus PBL: clean), associated risks: enduser. The Education network category indicates this IP is part of normal Education Network infrastructure and carries low inherent risk. Education-network traffic typically carries low risk; standard rate limiting is sufficient.

Recommendation: 110.65.147.238 belongs to an education network — risk is generally low, but academic IPs can be source of bulk research crawling or automated data collection. Apply standard rate limiting and allow normal browsing activity.

Education-network IPs are typically campus infrastructure — high bandwidth, stable location, and used by faculty/students. Unusual request patterns from such IPs may indicate compromised lab machines or unauthorized proxy use rather than deliberate abuse.