Blocks sold in pieces · IPv4 · 4,096 addresses
209.173.48.0/20
Sold in pieces
- Sellers
- NeuStar, Inc.
- Pieces
- 15 since 2008-12-01, the latest on 2026-07-10
- Share sold
- 94% (3,840 of 4,096 addresses)
- Buyers
- Neustar Security Services, Trans Union, LLC
Now
- ARIN statistics
- Allocated (dated 2001-03-21) (US), in the latest file
The block as ARIN's statistics listed it on 2008-11-27 or the day before a piece was transferred, whichever is larger. Registries often list what's left in smaller records after a sale.
The pieces
| Date | Piece | What happened | From | To |
|---|---|---|---|---|
| 2022-12-13 | 209.173.58.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Neustar Security Services ARIN |
| 2026-07-10 | 209.173.48.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.49.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.50.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.51.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.52.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.53.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.54.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.55.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.56.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.57.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.60.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.61.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.62.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
| 2026-07-10 | 209.173.63.0/24 | Merger/acquisition | NeuStar, Inc. ARIN | Trans Union, LLC ARIN |
Transfer records (16)
| Date (UTC) | Log | Type | Range moved | From | To |
|---|---|---|---|---|---|
| ARIN | Merger acquisition | 209.173.48.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.49.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.50.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.51.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.52.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.53.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.54.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.55.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.56.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.57.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.59.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.60.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.61.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.62.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.63.0/24 | NeuStar, Inc. ARIN | Trans Union, LLC ARIN | |
| ARIN | Merger acquisition | 209.173.58.0/24 | NeuStar, Inc. ARIN | Neustar Security Services ARIN |
Every record in the registries' transfer logs that moved any part of this block. A transfer between two registries is in both logs.