| base | record | name | ip | reverse | route | as |
| duo-gard.com | a | 67.225.163.205 United States | host.mp-server1.com | 67.225.128.0/18 Liquid Web Inc 4210 S. Creyts Rd Lansing, MI 48917 | AS32244 LiquidWeb Liquid Web Inc. |
| ns | ns3.worldnic.com | 205.178.190.2 United States | 205.178.160.0/19 | AS6245 INTERNIC InterNIC Registration Services |
| ns4.worldnic.com | 205.178.144.2 United States | 205.178.144.0/24 Proxy-registered route object | AS19871 NUPNY NuPremis, Inc. |
| mx | duo-gard-com.relay1a.spamh.com | 70.85.110.114 United States | lbh-s.spamh.com | 70.84.0.0/14 ThePlanet.com Internet Services, Inc. | AS21844 THEPLANET-AS2 ThePlanet.com Internet Services, Inc. |
| 209.62.15.50 United States | lbi-s.spamh.com | 209.62.0.0/17 ThePlanet.com Internet Services, Inc. |
| duo-gard-com.relay1b.spamh.com | 67.228.158.171 United States | lbo.spamh.com | 67.228.128.0/18 PNAP-DAL Softlayer Route | AS36351 SOFTLAYER Technologies Inc. |
| 208.43.89.133 United States | lbn.spamh.com | 208.43.64.0/18 PNAP-DAL Softlayer Route |
| duo-gard-com.relay1c.spamh.com | 208.43.128.147 United States | lbm.spamh.com | 208.43.128.0/18 PNAP-DAL Softlayer Route |
| 209.62.15.50 United States | lbi-s.spamh.com | 209.62.0.0/17 ThePlanet.com Internet Services, Inc. | AS21844 THEPLANET-AS2 ThePlanet.com Internet Services, Inc. |
| com | ns-soa | a.gtld-servers.net | 192.5.6.30 United States | 192.5.6.0/24 VeriSign Route | AS36621 VERISIGN-AS VeriSign, Inc |
| ns | a.gtld-servers.net | 192.5.6.30 United States |
| b.gtld-servers.net | 192.33.14.30 United States | 192.33.14.0/24 VeriSign Route | AS26415 VERISIGN-AS VeriSign, Inc |
| c.gtld-servers.net | 192.26.92.30 United States | 192.26.92.0/24 VeriSign Route | AS36625 VERISIGN-AS VeriSign, Inc |
| d.gtld-servers.net | 192.31.80.30 United States | 192.31.80.0/24 VeriSign Route | AS36617 VERISIGN-AS VeriSign, Inc |
| e.gtld-servers.net | 192.12.94.30 United States | 192.12.94.0/24 VeriSign Route | AS36629 VERISIGN-AS VeriSign, Inc |
| f.gtld-servers.net | 192.35.51.30 United States | 192.35.51.0/24 VeriSign Route | AS36625 VERISIGN-AS VeriSign, Inc |
| g.gtld-servers.net | 192.42.93.30 United States | 192.42.93.0/24 VeriSign Route | AS36624 VERISIGN-AS VeriSign, Inc |
| h.gtld-servers.net | 192.54.112.30 United States | 192.54.112.0/24 VeriSign Route | AS36623 VERISIGN-AS VeriSign, Inc |
| i.gtld-servers.net | 192.43.172.30 United States | 192.43.172.0/24 VeriSign Route | AS36625 VERISIGN-AS VeriSign, Inc |
| j.gtld-servers.net | 192.48.79.30 United States | 192.48.79.0/24 VeriSign Route | AS36626 VERISIGN-AS VeriSign, Inc |
| k.gtld-servers.net | 192.52.178.30 United States | 192.52.178.0/24 VeriSign Route | AS36622 VERISIGN-AS VeriSign, Inc |
| l.gtld-servers.net | 192.41.162.30 United States | 192.41.162.0/24 VeriSign Route | AS36628 VERISIGN-AS VeriSign, Inc |
| m.gtld-servers.net | 192.55.83.30 United States | 192.55.83.0/24 VeriSign Route | AS36618 VERISIGN-AS VeriSign, Inc |