1. All IP Ranges
  2. 145.0.0.0/8
  3. AS1103  | 145.120.0.0/14

145.120.0.0/14

AS1103  ·  SURF B.V.

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Summary

Country Netherlands
Domain surfnet.nl
ASN AS1103
Registry RIPE
ID SURFNET-EARLY-REGISTRATIONS

WHOIS Details

inetnum:        145.120.0.0 - 145.127.255.255
netname:        SURFNET-EARLY-REGISTRATIONS
descr:          SURFnet bv
descr:          P.O. Box 19035
descr:          Utrecht
descr:          3501 DA
country:        NL
admin-c:        SNS1-RIPE
tech-c:         SNS1-RIPE
org:            ORG-Sb3-RIPE
status:         LEGACY
remarks:        ---------------------------------------------------
remarks:        Use only cert@surfnet.nl to report security incidents.
remarks:        See also http://cert.surfnet.nl/ for more information.
remarks:        ---------------------------------------------------
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         SN-LIR-MNT
mnt-lower:      SN-LIR-MNT
mnt-lower:      SURF-AUTO-MNT
mnt-routes:     AS1103-MNT
created:        2025-11-24T12:50:35Z
last-modified:  2025-11-24T12:50:35Z
source:         RIPE
abuse-email:    cert@surfcert.nl
abuse-c:        SNS1-RIPE
abuse-org:      ORG-Sb3-RIPE

organisation:   ORG-Sb3-RIPE
org-name:       SURF B.V.
country:        NL
org-type:       LIR
address:        P.O. Box 19035
address:        3501 DA
address:        Utrecht
address:        NETHERLANDS
phone:          +31887873000
e-mail:         lir@surf.nl
admin-c:        HT3384-RIPE
admin-c:        MK512-RIPE
admin-c:        SNS1-RIPE
admin-c:        WB311-RIPE
admin-c:        NO17-RIPE
admin-c:        RS957-RIPE
admin-c:        JO5863-RIPE
admin-c:        MM57501-RIPE
abuse-c:        SNS1-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SN-LIR-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SN-LIR-MNT
created:        2004-04-17T11:43:29Z
last-modified:  2023-02-21T13:35:38Z
source:         RIPE
abuse-email:    cert@surfcert.nl
abuse-c:        SNS1-RIPE
abuse-org:      undefined

role:           SURF Network Maintainer
address:        Kantoren Hoog Overborch (Hoog Catharijne)
address:        Moreelsepark 48, 3511 EP Utrecht
address:        Postbus 19035, 3501 DA Utrecht
phone:          +31 88 7873000
admin-c:        WB311-RIPE
tech-c:         NO17-RIPE
tech-c:         WB311-RIPE
tech-c:         MK512-RIPE
tech-c:         JO5863-RIPE
tech-c:         MM57501-RIPE
tech-c:         BW4086-RIPE
tech-c:         EV4604-RIPE
nic-hdl:        SNS1-RIPE
abuse-mailbox:  cert@surfcert.nl
mnt-by:         AS1103-MNT
created:        2002-07-09T10:06:06Z
last-modified:  2025-11-05T14:44:07Z
source:         RIPE
e-mail:         noc@surf.nl

route:          145.120.0.0/14
origin:         AS1103
descr:          145.120.0.0/14 aggregate
mnt-by:         AS1103-MNT
notify:         lir@surfnet.nl
created:        2012-04-03T13:39:19Z
last-modified:  2019-03-21T09:01:44Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 145.0.0.0/8

Range ASN Company Num of IPs
145.132.0.0/15 AS8075 Microsoft Limited 131,072
145.26.0.0/16 AS3917 Shell Information Technology International 65,536
145.95.0.0/16 AS1103 SURF B.V. 65,536
145.13.0.0/16 AS21286 F&IT RIM - OsirisNG, Zoetermeer 65,536
145.243.0.0/16 AS200757 Axel Springer SE 65,536
145.58.0.0/16 AS25182 Publieke Omroep Nederland 65,536
145.220.0.0/16 AS1101 SURF B.V. 65,536
145.236.0.0/16 AS1902 Budapest 65,536
145.55.0.0/16 AS16509 A100 ROW Inc 65,536
145.244.0.0/16 AS210543 Steiermaerkische Krankenanstalten GesmbH 65,536
145.86.0.0/16 AS15830 Medisch Spectrum Twente 65,536
145.126.0.0/16 AS1103 SURFnet bv 65,536
145.108.0.0/16 AS1103 Vrije Universiteit Amsterdam 65,536
145.239.0.0/16 AS16276 OVH SAS 65,536
145.232.0.0/16 AS15675 Etat de Vaud, CCT 65,536
145.230.0.0/16 AS12663 Vodafone Group Services GmbH 65,536
145.17.0.0/16 AS16509 A100 ROW Inc 65,536
145.243.0.0/16 AS16509 Axel Springer SE 65,536
145.221.0.0/16 AS15625 ING Bank NV 65,536
145.4.0.0/16 AS1136 PGGM N.V. 65,536
145.68.0.0/16 AS1136 ISC-NL 65,536
145.234.0.0/16 AS206567 Tamedia AG 65,536
145.0.0.0/16 AS1103 SURFnet bv 65,536
145.94.0.0/16 AS1128 Delft University of Technology Network 65,536
145.52.0.0/16 AS1103 Haagse Hogeschool 65,536
145.76.0.0/16 AS1103 Hogeschool Saxion 65,536
145.81.0.0/16 AS1103 SURFnet bv 65,536
145.85.0.0/16 AS1103 Fontys Hogescholen 65,536
145.9.0.0/16 AS1103 Deltares 65,536
145.91.0.0/16 AS1103 Hogeschool Zuyd 65,536
145.245.0.0/16 AS2047 Hoffmann - La Roche Ltd. 65,536
145.19.0.0/16 AS1103 Hogeschool Zeeland Network 65,536
145.20.0.0/16 AS1103 Open Universiteit 65,536
145.7.0.0/16 AS1136 KPN B.V. 65,536
145.23.0.0/16 AS1103 Koninklijk Nederlands Meteorologisch Instituut 65,536
145.251.0.0/16 AS12552 Systembolaget AB 65,536
145.24.0.0/16 AS1103 Hogeschool Rotterdam & Omstreken 65,536
145.119.0.0/16 AS1136 ISC-NL 65,536
145.33.0.0/16 AS1103 Hanzehogeschool Groningen 65,536
145.103.0.0/16 AS1103 Stichting GlasLokaal 65,536
145.37.0.0/16 AS1103 Hanzehogeschool Groningen 65,536
145.18.0.0/16 AS1124 Universiteit van Amsterdam 65,536
145.41.0.0/16 AS1103 SURF B.V. 65,536
145.110.0.0/16 AS1104 NIKHEF 65,536
145.44.0.0/16 AS1103 Christelijke Hogeschool Windesheim 65,536
145.53.0.0/16 AS1136 KPN B.V. 65,536
145.5.0.0/16 AS1103 Erasmus Universiteit Rotterdam 65,536
145.117.0.0/16 AS1103 Academic Medical Centre 65,536
145.51.0.0/16 AS1103 Hogeschool Rotterdam & Omstreken 65,536
145.222.0.0/16 AS21286 KPN B.V. 65,536

Hosted domains

There are 36 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
145.121.56.161 zorgtalenten.com 24
145.120.13.114 arubaanseatletiekbond.org 3
145.120.3.135 dijckzigt.nl 2
145.121.56.155 ms-supportaal.nl 1
145.121.56.154 ms-supportaal-acceptatie.nl 1
145.121.56.150 digitaalalzheimercentrum.nl 1
145.121.56.193 lhca.nl 1
145.120.255.103 sluijter.net 1
145.121.10.163 capitalpartner.nl 1
145.120.13.134 simplus.nu 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

82 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
145.120.0.18 AS1103 SURF B.V. 1.14ms from Amsterdam, NL
145.120.77.136 AS1103 SURF B.V. 0.50ms from Amsterdam, NL
145.120.255.20 AS1103 SURF B.V. 2.22ms from Amsterdam, NL
145.120.78.43 AS1103 SURF B.V. 0.53ms from Amsterdam, NL
145.120.79.129 AS1103 SURF B.V. 0.48ms from Amsterdam, NL
145.120.3.137 AS1103 SURF B.V. 1.19ms from Amsterdam, NL
145.121.55.73 AS1103 SURF B.V. 0.84ms from Amsterdam, NL
145.120.2.11 AS1103 SURF B.V. 1.50ms from Amsterdam, NL
145.120.72.110 AS1103 SURF B.V. 1.68ms from Amsterdam, NL
145.120.71.53 AS1103 SURF B.V. 0.47ms from Amsterdam, NL

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
108.141.237.78 AS8075 Microsoft Corporation 1.73ms from Amsterdam, NL
107.199.104.254 AS7018 AT&T Enterprises, LLC 9.91ms from Atlanta, US
88.134.53.254 AS3209 Vodafone GmbH 3.55ms from Berlin, DE
113.0.215.206 AS4837 CHINA UNICOM China169 Backbone 12.36ms from Changchun, CN
72.1.21.190 AS7268 Athenet Internet Services 11.36ms from Chicago, US
187.17.27.238 AS28285 Beltrãonet Telecomunicações LTDA - EPP 8.66ms from Curitiba, BR
65.68.20.46 AS7018 AT&T Enterprises, LLC 9.88ms from Dallas, US
35.156.251.222 AS16509 Amazon.com, Inc. 0.12ms from Frankfurt am Main, DE
1.207.146.110 AS4134 CHINANET-BACKBONE 6.54ms from Guiyang, CN
31.19.45.254 AS3209 Vodafone GmbH 7.98ms from Hamburg, DE
94.101.12.142 AS29422 Telia Cygate Oy 0.80ms from Helsinki, FI
58.153.19.254 AS4760 HKT Limited 1.11ms from Hong Kong, HK
213.14.102.30 AS34984 Superonline Iletisim Hizmetleri A.S. 1.35ms from Istanbul, TR
195.59.66.14 AS1273 Vodafone Group PLC 4.78ms from London, GB
92.22.58.142 AS13285 TalkTalk Communications Limited 4.04ms from London, GB
86.28.97.238 AS5089 Virgin Media Limited 9.16ms from London, GB
104.160.173.142 AS46844 Sharktech 0.18ms from Los Angeles, US
120.159.251.254 AS135887 Belong (Telstra Limited) 1.84ms from Melbourne, AU
201.188.193.62 AS7418 TELEFÓNICA CHILE S.A. 4.18ms from Santiago, CL
50.53.103.78 AS20055 Wholesail networks LLC 1.73ms from Seattle, US
125.142.48.254 AS4766 Korea Telecom 1.86ms from Seoul, KR
61.65.2.126 AS9676 SaveCom Internation Inc. 1.48ms from Taipei, TW
136.175.197.46 AS399255 NORTHWEST OHIO BROADBAND, LLC 15.71ms from Toronto, CA
67.234.84.254 AS19901 Brightspeed 9.73ms from Atlanta, US
200.170.141.238 AS16735 ALGAR TELECOM S/A 1.18ms from Curitiba, BR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -m5 145.121.181.103
traceroute to 145.121.181.103 (145.121.181.103): 5 hops max, 52 byte packets
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Edinburgh, GB
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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