SOA records not consistent
Authoritative servers agree, but not all other servers have updated yet.
- Recently moved this domain to another DNS server? Check the NS records .
- Some servers may have cached older records - wait for their TTLs to expire.
DNS server
TTL
Time To Live
The amount of time a DNS record is cached for.
Records returned by these servers
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns1.nnn.upenn.edu
128.91.2.53
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns2.nnn.upenn.edu
128.91.254.53
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns3.nnn.upenn.edu
128.91.251.53
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns4.upenn.edu
208.94.148.32
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns5.upenn.edu
208.80.124.32
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
adns6.upenn.edu
208.80.126.32
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
dns1.udel.edu
128.175.13.16
The official source of information for this domain,
managed by the owner of upenn.edu .
managed by the owner of upenn.edu .
dns2.udel.edu
128.175.13.17
South Africa
102.214.232.100
India
103.224.242.100
Australia
115.128.200.122
Brazil
149.104.126.17
Netherlands
185.140.209.224
Canada
198.100.154.54
Russia
62.182.138.175
United States of America
64.225.55.162
2a10:50c0::ad1:ff
2606:4700:4700::1001
NextDNS
2a07:a8c0::53:54e9
2620:fe::fe
ipam2.nnn.upenn.edu. hostmaster.upenn.edu. 2002509947 10800 3600 604800 600
ipam2.nnn.upenn.edu. hostmaster.upenn.edu. 2002509944 10800 3600 604800 600
Ukraine
134.249.101.136
ipam2.nnn.upenn.edu. hostmaster.upenn.edu. 2002509946 10800 3600 604800 600