| 81.87.0.0/16 | Janet |  |
| 85.12.64.0/18 | Janet | |
| 87.38.12.0/24 | School Broadband Connection ID 2617 | |
| 89.207.208.0/21 | Janet | |
| 128.16.0.0/16 | London, WC1E 6BT | |
| 128.40.0.0/16 | University College London | |
| 128.41.0.0/18 | London, WC1E 6BT | |
| 128.86.0.0/16 | JANET Aggregate | |
| 128.232.0.0/16 | Cambridge CB3 0FD | |
| 128.240.0.0/16 | United Kingdom | |
| 128.243.0.0/16 | The University of Nottingham | |
| 129.11.0.0/16 | Leeds University | |
| 129.12.0.0/16 | University of Kent | |
| 129.31.0.0/16 | Janet | |
| 129.67.0.0/16 | Oxford University | |
| 130.88.0.0/16 | The University of Manchester Local Area Network | |
| 130.159.0.0/16 | University of Strathclyde | |
| 130.209.0.0/16 | G12 8QQ | |
| 130.246.0.0/16 | Rutherford Appleton Laboratory | |
| 131.111.0.0/16 | University of Cambridge | |
| 131.227.0.0/16 | University of Surrey | |
| 131.231.0.0/16 | Loughborough University | |
| 131.251.0.0/16 | Cardiff University | |
| 134.36.0.0/16 | University of Dundee | |
| 134.83.0.0/16 | Janet | |
| 134.151.0.0/16 | Birmingham, B4 7ET | |
| 134.219.0.0/16 | Egham, Surrey TW20 0EX | |
| 134.220.0.0/16 | West Midlands WV1 1AD | |
| 134.225.0.0/16 | Janet | |
| 136.148.0.0/16 | London, SE1 0AA | |
| 136.156.0.0/19 | European Centre for Medium-Range Weather Forecasts | |
| 136.156.82.0/24 | European Centre for Medium-Range Weather Forecasts | |
| 136.156.88.0/22 | European Centre for Medium-Range Weather Forecasts | |
| 136.156.160.0/21 | European Centre for Medium-Range Weather Forecasts | |
| 136.156.176.0/21 | European Centre for Medium-Range Weather Forecasts | |
| 137.44.0.0/16 | Swansea University | |
| 137.50.0.0/16 | University of Aberdeen, UK | |
| 137.73.0.0/16 | King's College London | |
| 137.108.0.0/16 | Open University | |
| 137.195.0.0/16 | Heriot-Watt University | |
| 137.222.0.0/16 | University of Bristol | |
| 137.253.0.0/16 | Janet | |
| 138.38.0.0/16 | BA2 7AY | |
| 138.40.0.0/16 | City, University of London | |
| 138.250.0.0/15 | The whole IPv4 address space | |
| 138.253.0.0/16 | University of Liverpool (NET-LIVNET) | |
| 139.133.0.0/16 | University of Aberdeen | |
| 139.153.0.0/16 | Janet | |
| 139.166.0.0/16 | SN2 1EU | |
| 139.184.0.0/16 | University of Sussex | |
| 139.184.0.0/17 | University of Sussex | |
| 139.184.128.0/17 | University of Sussex | |
| 139.222.0.0/16 | NR4 7TJ | |
| 140.97.0.0/16 | London Metropolitan University | |
| 141.163.0.0/17 | University of Plymouth | |
| 141.170.64.0/19 | (aq) networks limited | |
| 141.170.96.0/22 | (aq) networks limited | |
| 141.170.100.0/23 | (aq) networks limited | |
| 141.241.0.0/16 | KT1 2EE | |
| 143.52.0.0/15 | The whole IPv4 address space | |
| 143.117.0.0/16 | Queens University Belfast | |
| 143.167.0.0/16 | University of Sheffield | |
| 143.210.0.0/16 | University of Leicester | |
| 143.234.0.0/16 | Scottish Agricultural & Biological Research Institutes | |
| 144.32.0.0/16 | University of York | |
| 144.82.0.0/16 | The Bloomsbury Computing Consortium | |
| 144.124.0.0/16 | Janet | |
| 144.173.0.0/16 | Devon EX4 4QE | |
| 146.87.0.0/16 | Janet | |
| 146.97.0.0/16 | Jisc Services Limited | |
| 146.169.0.0/16 | Janet | |
| 146.176.0.0/16 | Janet | |
| 146.179.0.0/16 | Janet | |
| 146.191.0.0/16 | University of The West Of Scotland | |
| 146.227.0.0/16 | Janet | |
| 147.143.0.0/16 | University of Wales Bangor | |
| 147.188.0.0/16 | Birmingham, B15 2TT | |
| 147.197.0.0/16 | University of Hertfordshire | |
| 148.79.0.0/16 | Daresbury Laboratory Site Network | |
| 148.88.0.0/16 | Lancaster | |
| 148.197.0.0/16 | Portsmouth, Hants PO1 2PR | |
| 149.155.0.0/16 | Biotechnology And Biological Science Research Council | |
| 149.170.0.0/16 | Manchester M1 5GD | |
| 150.204.0.0/16 | Liverpool John Moores University | |
| 152.71.0.0/16 | Nottingham Trent University | |
| 152.78.0.0/16 | University of Southampton | |
| 152.105.0.0/16 | University of Teesside | |
| 155.198.0.0/16 | Janet | |
| 155.245.0.0/16 | University of Essex | |
| 157.140.0.0/16 | Natural History Museum | |
| 157.228.0.0/16 | Janet | |
| 158.94.0.0/16 | Middlesex University | |
| 158.125.0.0/16 | Loughborough University | |
| 158.143.0.0/16 | London School of Economics and Political Science | |
| 158.223.0.0/16 | Goldsmiths, University of London | |
| 159.86.128.0/18 | Janet | |
| 160.5.0.0/16 | ST5 5BG | |
| 160.9.0.0/16 | LS1 3HE | |
| 161.73.0.0/16 | Oxford Brookes University | |
| 161.74.0.0/16 | London, W1W 6UW | |
| 161.76.0.0/16 | University of East London | |
| 161.112.0.0/16 | Huddersfield, HD1 3DH | |
| 163.1.0.0/16 | Oxford University | |
| 163.119.0.0/16 | London Business School | |
| 163.160.0.0/16 | Leeds LS1 3EX | |
| 163.167.0.0/16 | London Metropolitan University | |
| 164.11.0.0/16 | Bristol, BS16 1QY | |
| 45.88.80.0/23 | European Bioinformatics Institute (EMBL-EBI) | |
| 46.254.200.0/21 | Janet | |
| 92.245.224.0/19 | Janet | |
| 129.169.0.0/16 | UNITED KINGDOM | |
| 129.215.0.0/16 | The Edinburgh University | |
| 129.234.0.0/16 | University of Durham | |
| 185.193.232.0/24 | Janet | |
| 185.255.108.0/22 | Janet | |
| 192.12.72.0/24 | Janet | |
| 192.18.195.0/24 | Medical Research Council - Cognition and Brain Sciences Unit | |
| 192.35.172.0/24 | Bristol BS16 1QY | |
| 192.41.103.0/24 | The Edinburgh University | |
| 192.41.104.0/21 | The Edinburgh University | |
| 192.41.112.0/20 | The Edinburgh University | |
| 192.41.128.0/22 | The Edinburgh University | |
| 192.68.153.0/24 | Imperial College at Northwick Park Hospital | |
| 192.76.6.0/23 | OX2 6NN | |
| 192.76.8.0/21 | OX2 6NN | |
| 192.76.16.0/20 | The whole IPv4 address space | |
| 192.76.32.0/22 | OX2 6NN | |
| 192.82.153.0/24 | Medical Research Council Human Genetics Unit | |
| 192.84.5.0/24 | University of Cambridge | |
| 192.84.75.0/24 | The University of Manchester | |
| 192.84.76.0/22 | The whole IPv4 address space | |
| 192.84.80.0/22 | The whole IPv4 address space | |
| 192.84.212.0/24 | Birkbeck College, Crystallography Department | |
| 192.88.9.0/24 | Janet | |
| 192.94.235.0/24 | Glyndwr University | |
| 192.100.78.0/24 | Rutherford Appleton Laboratory LAN for CRAY | |
| 192.107.168.0/24 | EH4 2XU | |
| 192.108.120.0/24 | Royal Observatory Edinburgh | |
| 192.124.46.0/24 | London WC2A 2AE | |
| 192.133.244.0/24 | Janet | |
| 192.149.111.0/24 | Janet | |
| 192.150.180.0/22 | The whole IPv4 address space | |
| 192.150.184.0/24 | The University of Manchester | |
| 192.153.213.0/24 | University of Cambridge | |
| 192.156.162.0/24 | Janet | |
| 192.160.194.0/24 | University of Ulster | |
| 192.171.128.0/18 | The whole IPv4 address space | |
| 192.171.139.0/24 | SN2 1EU | |
| 192.171.192.0/21 | The whole IPv4 address space | |
| 192.173.1.0/24 | NE1 8ST | |
| 192.173.2.0/23 | The whole IPv4 address space | |
| 192.173.4.0/24 | NE1 8ST | |
| 192.173.128.0/21 | Janet | |
| 192.188.157.0/24 | University of Ulster | |
| 192.188.158.0/24 | University of Ulster | |
| 192.190.201.0/24 | LS18 5HD | |
| 192.190.202.0/24 | LS18 5HD | |
| 192.195.42.0/23 | BT37 OQB | |
| 192.195.105.0/24 | Janet | |
| 192.195.116.0/23 | Janet | |
| 192.195.118.0/24 | Janet | |
| 193.32.22.0/24 | Riverside Health | |
| 193.37.225.0/24 | Janet | |
| 193.37.240.0/21 | Janet | |
| 193.38.143.0/24 | South Essex College of Further and Higher Education | |
| 193.39.80.0/21 | Janet | |
| 193.39.172.0/22 | Janet | |
| 193.39.212.0/24 | University of London | |
| 193.62.60.0/22 | Science and Technology Facilities Council | |
| 193.107.116.0/22 | Janet | |
| 193.130.15.0/24 | National Library of Scotland | |
| 193.133.28.0/23 | Chichester College Group | |
| 193.138.86.0/24 | Janet | |
| 194.32.32.0/20 | Janet | |
| 194.35.93.0/24 | Janet | |
| 194.35.186.0/24 | Janet | |
| 194.35.192.0/19 | University of the Highlands and Islands | |
| 194.35.241.0/24 | Janet | |
| 194.36.1.0/24 | UK High Energy Physics Glasgow network | |
| 194.36.2.0/23 | Janet | |
| 194.36.121.0/24 | Janet | |
| 194.36.152.0/21 | Janet | |
| 194.60.218.0/24 | Janet | |
| 194.66.0.0/16 | Janet | |
| 212.121.0.0/19 | Janet | |
| 212.121.192.0/19 | Janet | |
| 212.219.0.0/16 | Janet | |
| 77.241.76.0/22 | Janet | |
| 83.138.32.0/21 | Janet | |
| 87.34.97.0/24 | Broadband for Schools project | |
| 87.36.50.0/24 | Broadband for Schools project | |
| 159.86.0.0/16 | Janet | |
