AS4891
Port of Houston Authority of Harris County, Texas
USUnknown2026-07-16
Announced prefixes 1
Snapshot history
| Date | Name | Country | Class | Prefixes |
|---|---|---|---|---|
| 2026-11-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-12 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-11 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-10 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-09 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-08 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-07 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-06 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-05 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-04 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-03 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-02 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-11-01 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-31 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-30 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-29 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-28 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-27 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-26 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-25 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-24 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-23 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-22 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-21 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-20 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-19 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-18 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-17 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-16 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-15 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-14 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-12 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-11 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-10 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-09 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-08 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-07 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-06 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-05 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-04 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-03 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-02 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-10-01 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-30 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-29 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-28 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-27 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-26 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-25 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-24 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-23 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-22 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-21 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-20 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-19 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-18 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-17 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-16 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-15 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-14 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-12 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-11 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-10 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-09 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-08 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-07 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-06 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-05 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-04 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-03 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-02 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-09-01 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-31 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-30 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-29 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-28 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-27 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-26 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-25 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-24 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-23 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-22 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-21 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-20 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-19 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-18 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-17 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-16 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-15 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-14 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-12 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-11 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-10 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-09 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-08 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-07 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-06 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-05 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-04 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-03 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-02 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-08-01 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-31 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-30 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-29 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-28 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-27 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-26 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-25 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-24 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-23 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-22 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-21 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-20 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-19 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-18 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-17 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-16 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-15 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-14 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-12 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-11 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-10 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-09 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-08 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-07 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-06 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-05 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-04 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-03 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-02 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-07-01 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-30 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-29 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-28 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-27 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-26 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-25 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-24 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-23 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-22 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-21 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-20 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-19 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-18 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-17 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-16 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-15 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-14 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
| 2026-06-13 | Port of Houston Authority of Harris County, Texas | US | Unknown | 1 |
IP-block changes
Open full filtered history →| Observed | Block | Action | Previous origins | New origins |
|---|---|---|---|---|
| No block changes involve this ASN yet. | ||||
Changes page 1