HTTPfy

AS35228 O2BROADBAND Telefonica UK Limited

O2BROADBAND Telefonica UK Limited · registered in the United Kingdom

IPv4 addresses201,72891 prefixes · 0.006% of announced IPv4
Rank in United Kingdom#29largest network in GB by IPv4 space, of 2,074 · 0.30% of GB
Rank worldwide#1,072of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)35 prefixes
CountryUnited Kingdom2,261 ASNs registered there
Open AS35228 in ASN lookup Look up an IP in this network (46.233.64.1) All networks in United Kingdom

IPv4 prefixes

All 91 prefixes, in address order.

  • 46.233.64.0/20
  • 46.233.80.0/22
  • 46.233.84.0/22
  • 46.233.88.0/23
  • 46.233.90.0/23
  • 46.233.92.0/23
  • 46.233.94.0/24
  • 46.233.95.0/24
  • 46.233.96.0/21
  • 46.233.104.0/21
  • 46.233.112.0/20
  • 82.132.138.0/23
  • 82.132.144.0/23
  • 82.132.160.0/20
  • 82.132.176.0/22
  • 82.132.180.0/23
  • 82.132.182.0/23
  • 82.132.184.0/22
  • 82.132.198.0/23
  • 82.132.210.0/23
  • 82.132.212.0/22
  • 82.132.216.0/21
  • 82.132.224.0/20
  • 82.132.240.0/21
  • 82.132.248.0/23
  • 82.132.253.0/24
  • 87.194.0.0/23
  • 87.194.2.0/23
  • 87.194.4.0/23
  • 87.194.6.0/23
  • 87.194.8.0/23
  • 87.194.10.0/23
  • 87.194.12.0/23
  • 87.194.14.0/23
  • 87.194.16.0/21
  • 87.194.24.0/23
  • 87.194.26.0/23
  • 87.194.28.0/22
  • 87.194.32.0/20
  • 87.194.48.0/21
  • 87.194.56.0/21
  • 87.194.64.0/23
  • 87.194.66.0/23
  • 87.194.68.0/23
  • 87.194.70.0/23
  • 87.194.72.0/21
  • 87.194.80.0/21
  • 87.194.88.0/23
  • 87.194.90.0/23
  • 87.194.92.0/22
  • 87.194.96.0/21
  • 87.194.104.0/22
  • 87.194.108.0/23
  • 87.194.110.0/23
  • 87.194.112.0/23
  • 87.194.114.0/23
  • 87.194.116.0/22
  • 87.194.120.0/21
  • 87.194.128.0/18
  • 87.194.192.0/20
  • 87.194.208.0/21
  • 87.194.216.0/22
  • 87.194.220.0/23
  • 87.194.222.0/23
  • 87.194.224.0/19
  • 93.97.0.0/19
  • 93.97.32.0/22
  • 93.97.36.0/22
  • 93.97.40.0/21
  • 93.97.48.0/20
  • 93.97.64.0/20
  • 93.97.80.0/23
  • 93.97.82.0/23
  • 93.97.84.0/22
  • 93.97.88.0/21
  • 93.97.96.0/19
  • 93.97.128.0/18
  • 93.97.192.0/19
  • 93.97.224.0/23
  • 93.97.226.0/23
  • 93.97.228.0/22
  • 93.97.232.0/21
  • 93.97.240.0/23
  • 93.97.242.0/23
  • 93.97.244.0/22
  • 93.97.248.0/21
  • 158.230.0.0/17
  • 158.230.200.0/23
  • 158.230.202.0/23
  • 185.79.104.0/22
  • 185.132.84.0/24

IPv6 prefixes

All 35 prefixes.

  • 2a03:dd00::/37
  • 2a03:dd00:800::/44
  • 2a03:dd00:810::/46
  • 2a03:dd00:814::/46
  • 2a03:dd00:818::/45
  • 2a03:dd00:820::/46
  • 2a03:dd00:824::/47
  • 2a03:dd00:826::/47
  • 2a03:dd00:828::/45
  • 2a03:dd00:830::/44
  • 2a03:dd00:840::/42
  • 2a03:dd00:880::/41
  • 2a03:dd00:900::/40
  • 2a03:dd00:a00::/39
  • 2a03:dd00:c00::/38
  • 2a03:dd00:1000::/36
  • 2a03:dd00:2000::/36
  • 2a03:dd00:3000::/47
  • 2a03:dd00:3002::/48
  • 2a03:dd00:3003::/48
  • 2a03:dd00:3004::/46
  • 2a03:dd00:3008::/46
  • 2a03:dd00:300c::/47
  • 2a03:dd00:300e::/48
  • 2a03:dd00:300f::/48
  • 2a03:dd00:3010::/44
  • 2a03:dd00:3020::/43
  • 2a03:dd00:3040::/42
  • 2a03:dd00:3080::/41
  • 2a03:dd00:3100::/40
  • 2a03:dd00:3200::/39
  • 2a03:dd00:3400::/38
  • 2a03:dd00:3800::/37
  • 2a03:dd00:4000::/34
  • 2a03:dd00:8000::/33

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses
AS25310#26 ASN-CWACCESS Vodafone Limited229,376
AS201838#27 ASN-COMMUNITYFIBRE Community Fibre Limited221,952
AS8607#28 TIMICO Digital Space Group Limited205,568
AS12703#30 PULSANT-AS Pulsant (Scotland) Ltd183,040
AS47474#31 Virtual1 Virtual1 Limited153,344
AS20712#32 AS20712 Andrews & Arnold Ltd148,992

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