Data as of Nov 4, 2026
166.73.0.0/16
No anonymizer space · no proxy exits in 30 daysAnnounced only in parts
Announcement
22 inside
Type
Business
93% of it
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 166.73.0.0/23 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.2.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.3.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.4.0/23 since Aug 2020 | AS396982 | Hosting | Fiserv Solutions, LLC | |
| 166.73.6.0/23 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.8.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.10.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.11.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.12.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.13.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.14.0/23 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.16.0/24 since Jan 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.17.0/24 since Aug 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.24.0/23 since Apr 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.28.0/23 since Apr 2023 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.30.0/23 since Jun 2024 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.37.0/24 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.38.0/24 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.92.0/24 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.93.0/24 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.102.0/23 since Sep 2021 | AS11273 | Business | Fiserv Solutions, LLC | |
| 166.73.156.0/24 since Dec 2023 | AS11273 | Business | Fiserv Solutions, LLC |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
7,680 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 7,168 | 93% | 21 | |
| Hosting | 512 | 6.7% | 1 |