IPLIST.NET - 21.89.74.199.in-addr.arpa
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21.89.74.199.in-addr.arpa checked at 2025-11-22T13:27:22.207Z 3868ms 16/16/16 100% R:8 allDone:true timedOut:false 21.89.74.199.in-addr.arpa
| PTR | dhcp-199-74-89-21.res-hall.northwestern.edu | ||||||
| A | 199.74.89.21🇺🇸 Northwestern University | ||||||
| PTR | dhcp-199-74-89-21.res-hall.northwestern.edu | ||||||
89.74.199.in-addr.arpa
| NS | accuvax.northwestern.edu | ||||||
| NS | cicada.northwestern.edu | ||||||
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