Ultra DNS
UltraDNS
Data as of 2026-07-26
Registry
Cluster stats
| Netblocks | 4 |
| IPv6 | 2 prefixes (largest 2001:728:1c04::/48) |
| Cluster ID | 214594772 |
| Registry | PEERINGDB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | Registry record |
| Shared handles | clustered on 4 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 (4)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 103.25.228.20/32 | UltraDNS | PEERINGDB | ASSIGNED | ● high |
| 2001:dec:0:1::20/128 | UltraDNS | PEERINGDB | ASSIGNED | ● high |
| 213.130.49.96/28 | ULTRADNS-NET | RIPE | ASSIGNED PA | ● low |
| 2001:728:1c04::/48 | ULTRADNS-NET | RIPE | ASSIGNED | ● low |
IPv6 ranges (2)
Network trust
what's this?
RPKI hygiene: C
how networks compare →
75.0%
of checked blocks have valid RPKI ROA coverage
(3 of 4)
Possible discrepancies (1)
These blocks are registered to UltraDNS 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.
| 2001:728:1c04::/48 /48 | authorized for AS2914 — NTT America, Inc. |
NIC Handles
AS12008
DUMY-RIPE
DUMY-RIPE
MAINT-VIPAR