ISP Alliance a.s.
Cluster stats
| Netblocks | 119 |
| All fragments | 902 blocks across 160 clusters |
| Cluster ID | 191597376 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 33 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (119)
showing 50 of 119 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 5.39.200.0/23 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 5.183.12.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 46.29.224.0/21 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 46.255.8.0/21 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.194.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.210.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.216.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.223.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.240.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 77.104.245.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 78.111.112.0/20 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 91.192.32.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 91.210.16.109/32 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 91.210.16.143/32 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 93.91.144.0/20 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 93.91.152.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 93.91.154.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 94.138.116.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 94.138.120.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 94.140.25.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 109.235.0.0/21 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 148.59.93.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.0.20.22/32 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 185.0.20.23/32 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 185.15.108.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.40.80.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.52.172.0/23 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.52.172.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.73.100.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.73.104.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.73.108.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.74.61.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.94.4.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.138.68.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.151.171.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.155.32.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 185.167.184.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 193.107.160.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 193.138.152.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 195.26.25.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 213.108.162.0/23 | ISP Alliance a.s. | RIPE | ASSIGNED PI | ● high |
| 213.109.172.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 213.109.172.0/22 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 213.109.173.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 213.109.175.0/24 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 217.75.208.0/20 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 2001:678:112c::/48 | ISP Alliance a.s. | BGP | ANNOUNCED | ● high |
| 2001:7f8:14::33:1/128 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:14::33:2/128 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:7f::22/128 | ISP Alliance | PEERINGDB | ASSIGNED | ● high |
Network trust
what's this?
RPKI hygiene: B
how networks compare →
85.7%
of checked blocks have valid RPKI ROA coverage
(102 of 119)
Possible discrepancies (17)
These blocks are registered to ISP Alliance a.s. but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a04:c740::/29 /29 | authorized for AS198668 — Tlapnet s.r.o. |
| 2a04:f940::/29 /29 | authorized for AS204666 — Jiri Tlapak |
| 2a0d:3140::/29 /29 | authorized for AS198668 — Tlapnet s.r.o. |
| 2a10:8140::/29 /29 | authorized for AS207886 — ECOMP spol s r.o. |
| 2a0f:9300::/29 /29 | authorized for AS198668 — Tlapnet s.r.o. |
| 37.221.240.0/20 /20 | authorized for AS198668 — Tlapnet s.r.o. |
| 185.19.0.0/22 /22 | authorized for AS198668 — Tlapnet s.r.o. |
| 85.255.88.0/22 /22 | authorized for AS204666 — Jiri Tlapak |
| 45.153.192.0/22 /22 | authorized for AS198668 — Tlapnet s.r.o. |
| 185.97.24.0/22 /22 | authorized for AS198668 — Tlapnet s.r.o. |
| 185.74.60.0/23 /23 | authorized for AS198668 — Tlapnet s.r.o. |
| 185.116.51.0/24 /24 | authorized for AS204064 — CEZNET s.r.o. |
| 193.104.67.0/24 /24 | authorized for AS207886 — ECOMP spol s r.o. |
| 193.104.41.0/24 /24 | authorized for AS207886 — ECOMP spol s r.o. |
| 193.104.12.0/24 /24 | authorized for AS207886 — ECOMP spol s r.o. |
+2 more — see the REST API
NIC Handles
AC32880-RIPE
AC38633-RIPE
AS197393
AS201464
AS201476
AS202131
AS202774
AS210712
AS47232
AS47232
AS52084
COPROSYS-MNT
+21 more