AS57653 CTL-AS Central Technology Ltd

CTL-AS Central Technology Ltd · registered in the United Kingdom

IPv4 addresses4,3526 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#467largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#14,593of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS57653 in ASN lookup Look up an IP in this network (45.149.241.1) All networks in United Kingdom

IPv4 prefixes

All 6 prefixes, in address order.

45.149.241.0/24
93.123.74.0/23
94.156.96.0/24
94.156.186.0/24
109.69.232.0/21
185.191.84.0/22

IPv6 prefixes

All 1 prefix.

2a00:1ba8::/32

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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