IPLIST.NET - 20.221.137.81.in-addr.arpa
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20.221.137.81.in-addr.arpa checked at 2025-11-19T09:25:33.968Z 217ms 16/16/16 100% R:11 allDone:true timedOut:false 20.221.137.81.in-addr.arpa
| PTR | host81-137-221-20.in-addr.btopenworld.com | ||||||
| A | 81.137.221.20🇬🇧 BTnet (BT's UK IP Network - AS2856) | ||||||
| PTR | host81-137-221-20.in-addr.btopenworld.com | ||||||
221.137.81.in-addr.arpa
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