| Name | Parent zone | Child zone | Authoritative IPs |
| Exists? | Glue/additional records | Exists? |
| auth1.dns.cogentco.com | yes | A |
66.28.0.14 | yes | A | 66.28.0.14 |
| AAAA | 2001:550:1:a::d | AAAA | 2001:550:1:a::d |
| auth2.dns.cogentco.com | yes | A |
66.28.0.30 | yes | A | 66.28.0.30 |
| AAAA | | AAAA | 2001:550:1:b::d |
| nsa.ups.com | yes | A |
153.2.242.115 | yes | A | 153.2.242.115 |
| AAAA | | AAAA | |
| nsb.ups.com | yes | A |
153.2.244.155 | yes | A | 153.2.244.155 |
| AAAA | | AAAA | |
| cbru.br.ns.els-gms.att.net | yes | N/A (out of bailiwick) | yes | A | 68.94.156.132 |
| AAAA | 2001:1890:1ff:9f0:68:94:156:132 |
| cmtu.mt.ns.els-gms.att.net | yes | N/A (out of bailiwick) | yes | A | 99.99.99.132 |
| AAAA | 2001:1890:1ff:9f1:99:99:99:132 |