DNS Records
| Type | TTL | Extra |
|---|---|---|
| A | 300 | IP : 204.74.99.100 |
| NS | 86400 | TARGET : pdns85.ultradns.net |
| NS | 86400 | TARGET : pdns85.ultradns.org |
| NS | 86400 | TARGET : pdns85.ultradns.biz |
| NS | 86400 | TARGET : pdns85.ultradns.com |
| SOA | 1800 | MNAME : pdns85.ultradns.com RNAME : hostmaster.mheducation.com SERIAL : 2014120457 REFRESH : 172800 RETRY : 7200 EXPIRE : 864000 MINIMUM-TTL : 300 |
| MX | 1800 | PRI : 10 TARGET : corp148mr.mcgraw-hill.com |
| MX | 1800 | PRI : 50 TARGET : corp55wmr.mcgraw-hill.com |
| TXT | 1800 | TXT : v=spf1 mx -all |







