| Property | Value |
| Name | Houghton Mifflin Harcourt Publishing Company |
| Organization | Houghton Mifflin Harcourt Publishing Company |
| nameserv@hmhpub.com | |
| Address | 222 Berkeley St. |
| Zip Code | 02116 |
| City | Boston |
| State | MA |
| Country | US |
| Phone | +1.6173515000 |
| NameServer | NS4.HMCO.COM |
| Created | 1995-01-10 05:00:00 |
| Changed | 2015-01-28 23:25:05 |
| Expires | 2022-01-09 00:00:00 |
| Registrar | NETWORK SOLUTIONS, L |
| Date | IP Address |
| 2026-01-06 | 206.208.109.71 (ClassC) |