Surf BV IP addresses, domains and public networks

Country

Assigned AS AS1101, AS1102, AS1103, AS1105, AS1106, AS1107, AS1108, AS1125, AS1127, AS1128, AS1129, AS1130, AS1131, AS1132, AS1133, AS1138, AS1139, AS1141, AS1142, AS1143, AS1144, AS1145, AS1146, AS1147, AS1148, AS1149, AS1150, AS1151, AS1152, AS1153, AS1154, AS1155, AS1156, AS1157, AS1158, AS1159, AS1160, AS1161, AS1162, AS1163, AS1164, AS1165, AS1166, AS1167, AS1168, AS1169, AS1170, AS1171, AS1172, AS1173, AS1174, AS1175, AS1176, AS1177, AS1178, AS1179, AS1180, AS1181, AS1182, AS1183, AS1184, AS1185, AS1186, AS1187, AS1188, AS1189, AS1190, AS1191, AS1192, AS1193, AS1194, AS1195, AS1196, AS1198, AS1199, AS196613

Updated 11 July 2026

We found 163 IPv4 networks operated by this organization. The first 50 networks are displayed.

Results sorted by network size.

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Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: N/A

IP Range: 145.88.0.0 - 145.118.255.255

Block size: 2,031,616

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.120.0.0/13

IP Range: 145.120.0.0 - 145.127.255.255

Block size: 524,288

Surf BV

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Network: SURFPARENTBLOCK

CIDR: 145.136.0.0/13

IP Range: 145.136.0.0 - 145.143.255.255

Block size: 524,288

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.16.0.0/14

IP Range: 145.18.0.0 - 145.21.255.255

Block size: 262,144

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.20.0.0/14

IP Range: 145.23.0.0 - 145.26.255.255

Block size: 262,144

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.56.0.0/14

IP Range: 145.56.0.0 - 145.59.255.255

Block size: 262,144

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.72.0.0/14

IP Range: 145.73.0.0 - 145.76.255.255

Block size: 262,144

Surf BV

SURFnet bv

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: N/A

IP Range: 145.2.0.0 - 145.4.255.255

Block size: 196,608

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: N/A

IP Range: 145.28.0.0 - 145.30.255.255

Block size: 196,608

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: N/A

IP Range: 145.37.0.0 - 145.39.255.255

Block size: 196,608

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: N/A

IP Range: 145.47.0.0 - 145.49.255.255

Block size: 196,608

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.8.0.0/15

IP Range: 145.9.0.0 - 145.10.255.255

Block size: 131,072

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.14.0.0/15

IP Range: 145.15.0.0 - 145.16.255.255

Block size: 131,072

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.40.0.0/15

IP Range: 145.41.0.0 - 145.42.255.255

Block size: 131,072

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.50.0.0/15

IP Range: 145.51.0.0 - 145.52.255.255

Block size: 131,072

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.60.0.0/15

IP Range: 145.61.0.0 - 145.62.255.255

Block size: 131,072

Surf BV

SURFnet bv

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.0.0.0/16

IP Range: 145.0.0.0 - 145.0.255.255

Block size: 65,536

Surf BV

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Network: NATIONALE-SPEELTUIN-NET

CIDR: 145.6.0.0/16

IP Range: 145.6.0.0 - 145.6.255.255

Block size: 65,536

Surf BV

Hanzehogeschool Groningen

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Network: HANZE-NET

CIDR: 145.33.0.0/16

IP Range: 145.33.0.0 - 145.33.255.255

Block size: 65,536

Surf BV

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Network: NETSURF-NET

CIDR: 145.41.0.0/16

IP Range: 145.41.0.0 - 145.41.255.255

Block size: 65,536

Surf BV

Christelijke Hogeschool Windesheim

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Network: WINDESHEIM-NET

CIDR: 145.44.0.0/16

IP Range: 145.44.0.0 - 145.44.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.65.0.0/16

IP Range: 145.65.0.0 - 145.65.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.67.0.0/16

IP Range: 145.67.0.0 - 145.67.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.71.0.0/16

IP Range: 145.71.0.0 - 145.71.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET-EARLY-REGISTRATIONS

CIDR: 145.78.0.0/16

IP Range: 145.78.0.0 - 145.78.255.255

Block size: 65,536

Surf BV

Hogeschool Inholland

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Network: INHOLLAND-NET

CIDR: 145.81.0.0/16

IP Range: 145.81.0.0 - 145.81.255.255

Block size: 65,536

Surf BV

Fontys Hogeschool

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Network: FONTYS-NET

CIDR: 145.85.0.0/16

IP Range: 145.85.0.0 - 145.85.255.255

Block size: 65,536

Surf BV

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Network: NETSURF-NET

CIDR: 145.95.0.0/16

IP Range: 145.95.0.0 - 145.95.255.255

Block size: 65,536

Nikhef

Amsterdam

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Network: NIKHEF-NET

CIDR: 145.110.0.0/16

IP Range: 145.110.0.0 - 145.110.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB130

CIDR: 145.134.0.0/16

IP Range: 145.134.0.0 - 145.134.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB131

CIDR: 145.135.0.0/16

IP Range: 145.135.0.0 - 145.135.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB140

CIDR: 145.144.0.0/16

IP Range: 145.144.0.0 - 145.144.255.255

Block size: 65,536

Surf BV

SURFnet8 Network SURF BV P.O. Box 19035 Utrecht 3501 DA

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Network: SURFNET8

CIDR: 145.145.0.0/16

IP Range: 145.145.0.0 - 145.145.255.255

Block size: 65,536

Surf BV

Netherlight project

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Network: SURFNET-NETHERLIGHT

CIDR: 145.146.0.0/16

IP Range: 145.146.0.0 - 145.146.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB143

CIDR: 145.147.0.0/16

IP Range: 145.147.0.0 - 145.147.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB144

CIDR: 145.148.0.0/16

IP Range: 145.148.0.0 - 145.148.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB145

CIDR: 145.149.0.0/16

IP Range: 145.149.0.0 - 145.149.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB146

CIDR: 145.150.0.0/16

IP Range: 145.150.0.0 - 145.150.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB147

CIDR: 145.151.0.0/16

IP Range: 145.151.0.0 - 145.151.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB148

CIDR: 145.152.0.0/16

IP Range: 145.152.0.0 - 145.152.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB149

CIDR: 145.153.0.0/16

IP Range: 145.153.0.0 - 145.153.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB150

CIDR: 145.154.0.0/16

IP Range: 145.154.0.0 - 145.154.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB151

CIDR: 145.155.0.0/16

IP Range: 145.155.0.0 - 145.155.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB152

CIDR: 145.156.0.0/16

IP Range: 145.156.0.0 - 145.156.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB153

CIDR: 145.157.0.0/16

IP Range: 145.157.0.0 - 145.157.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB154

CIDR: 145.158.0.0/16

IP Range: 145.158.0.0 - 145.158.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB155

CIDR: 145.159.0.0/16

IP Range: 145.159.0.0 - 145.159.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB156

CIDR: 145.160.0.0/16

IP Range: 145.160.0.0 - 145.160.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB157

CIDR: 145.161.0.0/16

IP Range: 145.161.0.0 - 145.161.255.255

Block size: 65,536

Surf BV

SURFnet bv
P.O. Box 19035 3501 DA Utrecht

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Network: SURFNET-BLOCKB158

CIDR: 145.162.0.0/16

IP Range: 145.162.0.0 - 145.162.255.255

Block size: 65,536

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