SYN HOLDINGS LTD
SYN LTD
GLEIF verified
LEI
254900KQMTJQ0XX45X86
Registered name
SYN HOLDINGS LTD
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 113 · 82,448 IPv4 addresses |
| Registered in | United Kingdom (81) · IS (2) · BZ (1) · Germany (1) · Belgium (1) · Greece (1) |
| All fragments | 216 blocks across 21 clusters |
| Cluster ID | 208793266 |
| Registry | BGP |
| Owner jurisdiction | GB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 254900KQMTJQ0XX45X86 |
| Shared handles | clustered on 18 shared RIR contact/maintainer handles |
| Registry names | 11 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
145
0 netblocks since 2026-07-05
2026-07-05
peak 145
2026-07-19
IP Ranges (113)
showing 50 of 113 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 43.239.88.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.64.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.65.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.67.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.68.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.80.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.84.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.87.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.93.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.94.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 45.43.95.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 87.239.253.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 89.33.6.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 89.33.7.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 91.210.64.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 91.226.97.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 94.177.5.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 103.206.232.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.163.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.164.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.165.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.166.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.167.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.172.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.161.173.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.128.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.132.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.140.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.148.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.150.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.152.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.153.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.154.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 107.181.156.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 113.20.157.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 113.20.158.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.32.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.33.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.34.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.36.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.40.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.44.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.48.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.50.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.52.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.56.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.61.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 155.254.63.0/24 | SYN LTD | BGP | ANNOUNCED | ● high |
| 162.220.246.0/23 | SYN LTD | BGP | ANNOUNCED | ● high |
| 185.135.212.0/22 | SYN LTD | BGP | ANNOUNCED | ● high |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
79.6%
of checked blocks have valid RPKI ROA coverage
(90 of 113)
Wholesale/transit re-announcements (68)
These blocks are registered to SYN LTD but cryptographically authorized across 6 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.
| 2a02:2ca0::/29 /29 | authorized for AS43350 — NForce Entertainment B.V. |
| 2a05:9f46::/32 /32 | authorized for AS42831 — UK Dedicated Servers Limited |
| 2a05:9f47::/32 /32 | authorized for AS42831 — UK Dedicated Servers Limited |
| 2a07:9940:3333::/48 /48 | authorized for AS40676 — Psychz Networks |
| 2a05:9f40:1f::/48 /48 | authorized for AS42831 — UK Dedicated Servers Limited |
| 2a05:9f44:2a05::/48 /48 | authorized for AS42831 — UK Dedicated Servers Limited |
| 2a07:9942:39d6::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9944:40::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9945:45::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9946:17c::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9946:23b::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9946:826::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9946:db0::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9946:fd5::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
| 2a07:9947:1c3::/48 /48 | authorized for AS23470 — ReliableSite.Net LLC |
+53 more — see the REST API
NIC Handles
ARCOR-MNT
AS50077
AS58305
AS64080
DUMY-RIPE
DUMY-RIPE
INTERB-MNT
MNT-MCM
MNT-SYN
MNT-SYN
NEWNET-MNT
ORG-Ih2-RIPE
+6 more