YAGUMYAGUM
Bifrost Systems OU
Data as of 2026-10-04
Handle
This organisation
| Netblocks | 48 · 9,736 IPv4 addresses |
| IPv6 | 8 prefixes (largest 2a11:6a00::/29) |
| Registered in | EE (35) · Ukraine (16) · United Kingdom (9) · United States (9) · Canada (3) · Germany (2) |
| Record ID | 245480875 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | RIR handle |
| Shared handles | clustered on 46 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (48)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 2.152.78.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 5.252.156.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 45.81.151.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 45.85.120.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 45.85.122.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 45.85.123.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 79.98.39.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 87.192.81.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 89.21.84.0/24 | Bifrost Systems OU | RIPE | SUB-ALLOCATED PA | ● high |
| 89.28.207.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 89.251.31.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 91.226.57.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 109.205.189.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 130.78.10.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 146.19.131.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 152.89.195.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 178.17.247.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 178.212.137.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 185.209.86.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 185.209.87.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 188.66.25.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 188.244.96.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 188.244.97.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 192.145.53.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 193.93.55.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 193.148.247.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 193.246.161.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 194.63.144.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 194.147.218.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 194.238.77.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 195.123.188.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 213.109.181.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 213.218.163.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 213.239.152.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 213.239.153.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 217.180.23.0/24 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 2a11:6a00::/48 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 2a12:2780::/48 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 2a12:8200::/48 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 2a12:ab00::/48 | Bifrost Systems OU | BGP | ANNOUNCED | ● high |
| 2.27.104.0/24 | YAGUMYAGUM | RIPE | SUB-ALLOCATED PA | ● medium |
| 185.191.228.184/29 | ipv4guard | RIPE | ASSIGNED PA | ● medium |
| 45.85.120.0/22 | Bifrost Systems OU | RIPE | ALLOCATED PA | ● low |
| 213.239.152.0/23 | Bifrost Systems OU | RIPE | ALLOCATED PA | ● low |
| 2a11:6a00::/29 | Bifrost Systems OU | RIPE | ALLOCATED-BY-RIR | ● low |
| 2a12:2780::/29 | Bifrost Systems OU | RIPE | ALLOCATED-BY-RIR | ● low |
| 2a12:8200::/29 | Bifrost Systems OU | RIPE | ALLOCATED-BY-RIR | ● low |
| 2a12:ab00::/29 | Bifrost Systems OU | RIPE | ALLOCATED-BY-RIR | ● low |
IPv6 ranges (8)
Footprint over time
15 weekly snapshots · JSON
82
+25 netblocks since 2026-07-05
2026-07-05
peak 88
2026-10-04
Network trust
what's this?
RPKI hygiene: B
how networks compare →
92.7%
of checked blocks have valid RPKI ROA coverage
(76 of 82)
Wholesale/transit re-announcements (22)
These blocks are registered to Bifrost Systems OU but cryptographically authorized across 10 different networks — typical for a large wholesale or transit carrier whose address space is substantially re-announced by downstream customers under their own ASNs, not individually noteworthy.
| 79.98.39.0/24 /24 | authorized for AS43950 — Terence Froy trading as "Spilsby Internet Solutions" |
| 91.226.57.0/24 /24 | authorized for AS210576 — Sangmin Lee trading as YAGUMYAGUM |
| 188.244.97.0/24 /24 | authorized for AS207193 — Saint Gobain Group Digital & IT International SAS |
| 152.89.195.0/24 /24 | authorized for AS34346 — LIMITED LIABILITY COMPANY "I.D.STRATEGY" |
| 2.27.104.0/24 /24 | authorized for AS210576 — Sangmin Lee trading as YAGUMYAGUM |
| 193.93.55.0/24 /24 | authorized for AS12401 — internic Datenkommunikations GmbH |
| 89.21.84.0/24 /24 | authorized for AS16276 — OVH SAS |
| 89.251.31.0/24 /24 | authorized for AS399631 — StreamICan LLC |
| 87.192.81.0/24 /24 | authorized for AS6079 — RCN |
| 89.21.84.0/24 /24 | authorized for AS16276 — OVH SAS |
| 89.251.31.0/24 /24 | authorized for AS399631 — StreamICan LLC |
| 91.226.57.0/24 /24 | authorized for AS210576 — Sangmin Lee trading as YAGUMYAGUM |
| 188.244.97.0/24 /24 | authorized for AS207193 — Saint Gobain Group Digital & IT International SAS |
| 193.93.55.0/24 /24 | authorized for AS12401 — internic Datenkommunikations GmbH |
| 193.148.247.0/24 /24 | authorized for AS12401 — internic Datenkommunikations GmbH |
+7 more — see the REST API
NIC Handles
AR39374-RIPE
AS12401
AS16276
AS204464
AS210576
AS215133
AS215666
AS219157
AS399631
AS48539
AS6079
DUMY-RIPE
+34 more