IPv4 AS Names Directory: AS Name Houghton Mifflin Harcourt Publishing Company
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 155.44.0.0 to 155.44.255.255 | 155.44.0.0/16 | AS18830 | Houghton Mifflin Harcourt Publishing Company | See Range |
| 206.208.104.0 to 206.208.111.255 | 206.208.104.0/21 | AS18830 | Houghton Mifflin Harcourt Publishing Company | See Range |
| 208.85.124.0 to 208.85.127.255 | 208.85.124.0/22 | AS18830 | Houghton Mifflin Harcourt Publishing Company | See Range |
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