| Property | Value |
| Name | Houghton Mifflin Harcourt |
| Organization | Houghton Mifflin Harcourt |
| nameserv@hmhco.com | |
| Address | 222 Berkeley St. |
| Zip Code | 02116 |
| City | Boston |
| State | MA |
| Country | US |
| Phone | +1.6173515000 |
| NameServer | NS-494.AWSDNS-61.COM |
| Created | 1996-08-27 04:00:00 |
| Changed | 2015-06-08 13:30:27 |
| Expires | 2020-08-26 00:00:00 |
| Registrar | NETWORK SOLUTIONS, L |
| Date | IP Address |
| 2018-10-07 | 172.224.14.241 (ClassC) |
| 2021-06-25 | 45.60.11.203 (ClassC) |
| 2023-07-01 | 54.209.63.70 (ClassC) |
| 2023-08-30 | 3.90.96.235 (ClassC) |
| 2024-02-10 | 23.20.149.239 (ClassC) |
| 2024-04-14 | 3.95.108.179 (ClassC) |
| 2024-07-18 | 44.207.95.77 (ClassC) |
| 2024-08-02 | 52.2.223.255 (ClassC) |
| 2024-08-22 | 44.198.119.189 (ClassC) |
| 2024-10-12 | 184.72.77.78 (ClassC) |
| 2024-11-24 | 3.231.72.27 (ClassC) |
| 2024-12-14 | 18.214.75.254 (ClassC) |
| 2025-01-22 | 34.205.251.107 (ClassC) |
| 2025-03-15 | 44.205.66.168 (ClassC) |
| 2025-04-01 | 44.219.196.75 (ClassC) |
| 2025-04-22 | 34.195.50.209 (ClassC) |
| 2025-06-17 | 44.206.12.68 (ClassC) |
| 2025-07-02 | 54.160.194.43 (ClassC) |
| 2025-07-03 | 52.21.243.5 (ClassC) |
| 2025-08-07 | 52.204.181.84 (ClassC) |
| 2025-08-21 | 13.216.172.11 (ClassC) |
| 2026-02-14 | 52.202.117.14 (ClassC) |
| 2026-02-21 | 52.72.199.156 (ClassC) |
| Date | Domain | IP |
| pre.channelone.com | 2026-02-19 | 45.60.11.203 |
| cdn.channelone.com | 2014-05-09 | 74.201.0.13 |
| news.channelone.com | 2024-11-16 | 3.213.25.83 |
| www.channelone.com | 2024-04-14 | 3.95.108.179 |