AS64080 SYN-UK SYN LTD

SYN-UK SYN LTD · registered in the United Kingdom

IPv4 addresses15,87231 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#217largest network in GB by IPv4 space, of 2,074 · 0.02% of GB

Rank worldwide#7,165of 79,396 networks with IPv4

IPv62 x /32 (131,074 x /48)3 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS64080 in ASN lookup Look up an IP in this network (45.43.64.1) All networks in United Kingdom

IPv4 prefixes

All 31 prefixes, in address order.

45.43.64.0/23
45.43.67.0/24
45.43.68.0/22
45.43.80.0/22
45.43.84.0/23
45.43.87.0/24
45.43.93.0/24
45.43.94.0/23
87.239.253.0/24
89.33.6.0/23
94.177.5.0/24
107.181.128.0/22
107.181.132.0/23
107.181.140.0/22
107.181.148.0/23
107.181.150.0/24
107.181.152.0/23
107.181.154.0/24
113.20.157.0/24
113.20.158.0/24
155.254.32.0/23
155.254.34.0/24
155.254.36.0/22
155.254.48.0/23
155.254.61.0/24
162.220.246.0/23
198.105.100.0/22
198.105.108.0/22
198.105.119.0/24
198.105.121.0/24
198.105.122.0/24

IPv6 prefixes

All 3 prefixes.

2a05:9f40:1f::/48
2a05:9f44:2a05::/48
2a05:9f46::/31

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AS58325#219 BANDWIDTH-ASIA Hydra Communications Ltd15,872

AS8902#220 IFB CCS Connectivity Limited15,616

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources