145.126.0.0/16

AS1103 · SURF B.V.

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	Netherlands
Domain	surfnet.nl
ASN	AS1103
Registry	RIPE
ID	SURFNET-BLOCKB122

WHOIS Details

inetnum:        145.126.0.0 - 145.126.255.255
netname:        SURFNET-BLOCKB122
descr:          SURFnet bv
descr:          P.O. Box 19035
descr:          3501 DA Utrecht
country:        NL
admin-c:        SNS1-RIPE
tech-c:         SNS1-RIPE
status:         LEGACY
remarks:        -------------------------------------------------
remarks:        Use cert@surfnet.nl to report security incidents.
remarks:        See http://cert.surfnet.nl/ for more information.
remarks:        -------------------------------------------------
mnt-by:         SN-LIR-MNT
mnt-lower:      SN-LIR-MNT
mnt-routes:     SN-LIR-MNT
mnt-irt:        irt-SURFcert
notify:         lir@surfnet.nl
created:        2003-09-09T09:34:08Z
last-modified:  2019-12-04T13:13:07Z
source:         RIPE
abuse-email:    cert@surfcert.nl
abuse-c:        SNS1-RIPE
abuse-org:      ORG-Sb3-RIPE

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:          145.126.0.0/16
origin:         AS1103
descr:          145.126.0.0/16 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
145.243.0.0/16	AS16509	Axel Springer SE	65,536
145.26.0.0/16	AS3917	Shell Information Technology International	65,536
145.218.0.0/16	AS49362	DSV A/S	65,536
145.58.0.0/16	AS25182	Publieke Omroep Nederland	65,536
145.236.0.0/16	AS1902	Budapest	65,536
145.251.0.0/16	AS5411	Systembolaget AB	65,536
145.55.0.0/16	AS16509	A100 ROW Inc	65,536
145.31.0.0/16	AS42894	Ministerie van Verkeer en Waterstaat/Rijkswaterstaat	65,536
145.247.0.0/16	AS41701	Porkkalankatu 3	65,536
145.237.0.0/16	AS34339	Centrum Informatyki Resortu Finansow	65,536
145.17.0.0/16	AS16509	A100 ROW Inc	65,536
145.243.0.0/16	AS200757	Axel Springer SE	65,536
145.4.0.0/16	AS702	PGGM N.V.	65,536
145.228.0.0/16	AS33873	Arvato Systems GmbH	65,536
145.243.0.0/16	AS8792	Axel Springer SE	65,536
145.32.0.0/16	AS34108	Gemeente Delft	65,536
145.233.0.0/16	AS3549	LUMEN TECHNOLOGIES UK LIMITED	65,536
145.35.0.0/16	AS42517	Schiphol Telematics BV	65,536
145.50.0.0/16	AS42894	Ministerie van Verkeer en Waterstaat/Rijkswaterstaat	65,536
145.236.0.0/16	AS5483	Budapest	65,536
145.5.0.0/16	AS1103	Erasmus University Rotterdam	65,536
145.82.0.0/16	AS25019	Saudi Telecom Company JSC	65,536
145.10.0.0/16	AS48037	SSC-ICT Haaglanden	65,536
145.51.0.0/16	AS1103	Hogeschool Rotterdam & Omstreken	65,536
145.117.0.0/16	AS1103	Academic Medical Centre	65,536
145.86.0.0/16	AS15830	Medisch Spectrum Twente	65,536
145.222.0.0/16	AS21286	KPN B.V.	65,536
145.13.0.0/16	AS21286	F&IT RIM - OsirisNG, Zoetermeer	65,536
145.244.0.0/16	AS210543	Steiermaerkische Krankenanstalten GesmbH	65,536
145.238.0.0/16	AS2200	Observatoire de Paris	65,536
145.108.0.0/16	AS1103	Vrije Universiteit Amsterdam	65,536
145.239.0.0/16	AS16276	OVH SAS	65,536
145.220.0.0/16	AS1101	SURF B.V.	65,536
145.230.0.0/16	AS12663	Vodafone Group Services GmbH	65,536
145.245.0.0/16	AS2047	Hoffmann - La Roche Ltd.	65,536
145.234.0.0/16	AS206567	Tamedia AG	65,536
145.232.0.0/16	AS15675	Etat de Vaud, CCT	65,536
145.4.0.0/16	AS1136	PGGM N.V.	65,536
145.68.0.0/16	AS1136	ISC-NL	65,536
145.53.0.0/16	AS1136	KPN B.V.	65,536
145.0.0.0/16	AS1103	SURFnet bv	65,536
145.221.0.0/16	AS15625	ING Bank NV	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

Hosted domains

There are no domains currently hosted on this ASN.

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

1,846 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
145.126.124.5	AS1103 SURF B.V.	`4.38ms` from Amsterdam, NL
145.126.104.16	AS1103 SURF B.V.	`4.40ms` from Amsterdam, NL
145.126.79.94	AS1103 SURF B.V.	`6.07ms` from Amsterdam, NL
145.126.83.128	AS1103 SURF B.V.	`5.96ms` from Amsterdam, NL
145.126.30.236	AS1103 SURF B.V.	`6.17ms` from Amsterdam, NL
145.126.45.127	AS1103 SURF B.V.	`5.98ms` from Amsterdam, NL
145.126.69.217	AS1103 SURF B.V.	`6.07ms` from Amsterdam, NL
145.126.68.67	AS1103 SURF B.V.	`6.28ms` from Amsterdam, NL
145.126.16.5	AS1103 SURF B.V.	`4.57ms` from Amsterdam, NL
145.126.59.152	AS1103 SURF B.V.	`6.81ms` from Amsterdam, NL
145.126.86.5	AS1103 SURF B.V.	`6.77ms` from Amsterdam, NL
145.126.80.8	AS1103 SURF B.V.	`4.56ms` from Amsterdam, NL
145.126.41.115	AS1103 SURF B.V.	`5.92ms` from Amsterdam, NL
145.126.8.22	AS1103 SURF B.V.	`4.66ms` from Amsterdam, NL
145.126.57.214	AS1103 SURF B.V.	`6.66ms` from Amsterdam, NL
145.126.93.151	AS1103 SURF B.V.	`6.18ms` from Amsterdam, NL
145.126.20.148	AS1103 SURF B.V.	`6.96ms` from Amsterdam, NL
145.126.54.4	AS1103 SURF B.V.	`5.74ms` from Amsterdam, NL
145.126.56.5	AS1103 SURF B.V.	`4.70ms` from Amsterdam, NL
145.126.10.0	AS1103 SURF B.V.	`6.01ms` from Amsterdam, NL
145.126.74.234	AS1103 SURF B.V.	`6.27ms` from Amsterdam, NL
145.126.95.165	AS1103 SURF B.V.	`5.76ms` from Amsterdam, NL
145.126.0.5	AS1103 SURF B.V.	`4.37ms` from Amsterdam, NL
145.126.51.29	AS1103 SURF B.V.	`5.94ms` from Amsterdam, NL
145.126.15.243	AS1103 SURF B.V.	`6.15ms` 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
181.89.97.240	AS7303 Telecom Argentina S.A.	`17.05ms` from Buenos Aires, AR
78.182.13.144	AS9121 Turk Telekomunikasyon Anonim Sirketi	`9.86ms` from Bursa, TR
83.159.57.128	AS12322 Free SAS	`10.59ms` from Paris, FR
200.159.158.0	AS27688 Winfnet Telecom Wireless Ltda	`0.92ms` from Rio de Janeiro, BR
213.108.35.16	AS31376 Smart Telecom Limited	`0.97ms` from Saint Petersburg, RU
71.7.89.0	AS7029 Windstream Communications LLC	`5.98ms` from Atlanta, US
213.112.65.192	AS8434 Telenor Sverige AB	`0.52ms` from Goeteborg, SE
113.239.20.240	AS4837 CHINA UNICOM China169 Backbone	`8.07ms` from Liaoyang, CN
81.155.122.64	AS2856 British Telecommunications PLC	`5.81ms` from London, GB
76.50.229.32	AS20001 Charter Communications Inc	`4.99ms` from Los Angeles, US
172.90.134.176	AS20001 Charter Communications Inc	`5.84ms` from Los Angeles, US
66.41.158.192	AS7922 Comcast Cable Communications, LLC	`6.79ms` from Minneapolis, US
65.41.147.224	AS2379 CenturyLink Communications, LLC	`0.62ms` from Orlando, US
60.139.122.176	AS17676 SoftBank Corp.	`3.48ms` from Osaka, JP
15.229.69.224	AS16509 Amazon.com, Inc.	`0.90ms` from Osasco, BR
185.60.26.96	AS34949 IDLINE SAS	`8.57ms` from Paris, FR
184.103.140.80	AS209 CenturyLink Communications, LLC	`2.57ms` from Phoenix, US
116.43.229.144	AS17858 LG POWERCOMM	`2.20ms` from Seoul, KR
121.186.199.96	AS4766 Korea Telecom	`4.71ms` from Seoul, KR
172.188.163.224	AS8075 Microsoft Corporation	`0.54ms` from Singapore, SG
163.27.71.16	AS1659 Taiwan Academic Network (TANet) Information Center	`5.71ms` from Taipei, TW
223.134.11.64	AS2527 Sony Network Communications Inc.	`2.42ms` from Tokyo, JP
119.98.205.160	AS4134 CHINANET-BACKBONE	`2.13ms` from Wuhan, CN
73.47.144.48	AS7922 Comcast Cable Communications, LLC	`7.03ms` from Boston, US
34.170.107.16	AS396982 Google LLC	`0.11ms` from Council Bluffs, US

Traceroute

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

traceroute -a -n -q1 -f3 145.126.21.101

traceroute to 145.126.21.101 (145.126.21.101): 64 hops max, 52 byte packets

3 [] 185.1.160.38 0.398 ms

4 [AS1103] 145.145.181.11 6.127 ms

5 [AS1103] 145.145.176.51 5.033 ms

6 [AS1103] 145.145.176.61 4.95 ms

7 [AS1103] 145.145.4.41 4.711 ms

8 [AS1103] 145.145.4.42 5.482 ms

9 [AS1133] 130.89.254.2 9.056 ms

10 [AS1133] 130.89.254.37 5.257 ms

11 [AS1103] 145.126.21.101 6.785 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On November 14th 2025

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales