Nothing strange, you just try to search APNIC's IP address in ARIN database, and you get APNIC postal address, one of A class IP-ranges owned by APNIC and link to APNIC's whois service
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ARIN
OrgName: Asia Pacific Network Information Centre
OrgID: APNIC
Address: PO Box 2131
City: Milton
StateProv: QLD
PostalCode: 4064
Country: AU
NetRange: 218.0.0.0 - 218.255.255.255
NetType: Allocated to APNIC
Comment: This IP address range is not registered in the ARIN database.
Comment: For details, refer to the APNIC Whois Database via
Comment: WHOIS.APNIC.NET or http://www.apnic.net/apnic-bin/whois2.pl
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APNIC
inetnum: 218.86.128.0 - 218.86.255.255
netname: CHINANET-GZ
descr: CHINANET Guizhou province network
descr: Data Communication Division
descr: China Telecom
country: CN
source: APNIC