Dordt University
Data as of 2026-10-04
BGP inherited
This organisation
| Netblocks | 19 · 3,840 IPv4 addresses |
| IPv6 | 1 prefix (largest 2607:fe28:10::/48) |
| Record ID | 246668505 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (19)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 173.233.32.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.33.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.34.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.35.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.36.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.37.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.38.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.39.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.40.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.41.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.42.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.43.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.44.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.45.0/24 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 198.97.44.0/24 | Dordt University | ARIN | DIRECT ALLOCATION | ● high |
| 2607:fe28:10::/48 | Dordt University | ARIN | ASSIGNMENT | ● high |
| 173.233.32.0/21 | Dordt University | BGP | ANNOUNCED | ● medium |
| 173.233.40.0/22 | Dordt University | BGP | ANNOUNCED | ● medium |
| 173.233.44.0/23 | Dordt University | BGP | ANNOUNCED | ● medium |
IPv6 ranges (1)
| CIDR |
|---|
| 2607:fe28:10::/48 |
Footprint over time
9 weekly snapshots · JSON
20
+14 netblocks since 2026-08-09
2026-08-09
peak 21
2026-10-04
Network trust
what's this?
RPKI hygiene: B
how networks compare →
90.0%
of checked blocks have valid RPKI ROA coverage
(18 of 20)
Possible discrepancies (18)
These blocks are registered to Dordt University but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2607:fe28:10::/48 /48 | authorized for AS53347 — Premier Communications |
| 173.233.32.0/21 /21 | authorized for AS53347 — Premier Communications |
| 173.233.40.0/22 /22 | authorized for AS53347 — Premier Communications |
| 173.233.44.0/23 /23 | authorized for AS53347 — Premier Communications |
| 173.233.32.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.33.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.34.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.35.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.36.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.37.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.38.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.39.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.40.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.41.0/24 /24 | authorized for AS53347 — Premier Communications |
| 173.233.42.0/24 /24 | authorized for AS53347 — Premier Communications |
+3 more — see the REST API
NIC Handles
AS398119
AS53347
CSHD-ARIN
CSHD-ARIN
CSHD-ARIN
DORDTC
WEBMA349-ARIN