145.97.20.0/22

AS1103 · SURF B.V.

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Summary

Country	Netherlands
Domain	surf.nl
ASN	AS1103
Registry	RIPE
ID	SNET-AT-SARA

WHOIS Details

inetnum:        145.97.20.0 - 145.97.23.255
netname:        SNET-AT-SARA
descr:          SURFnet SURFcloud
descr:          Amsterdam
country:        NL
admin-c:        SNS1-RIPE
tech-c:         SNS1-RIPE
status:         LEGACY
mnt-by:         SN-LIR-MNT
mnt-irt:        irt-SURFcert
created:        2010-07-23T14:12:48Z
last-modified:  2019-12-04T13:43:33Z
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
nic-hdl:        SNS1-RIPE
abuse-mailbox:  cert@surfcert.nl
mnt-by:         AS1103-MNT
created:        2002-07-09T10:06:06Z
last-modified:  2025-10-01T09:23:01Z
source:         RIPE
e-mail:         noc@surf.nl

route:          145.97.20.0/22
descr:          SNET-AT-SARA
origin:         AS1103
mnt-by:         AS1103-MNT
created:        2010-09-08T10:26:09Z
last-modified:  2010-09-08T10:26:09Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 145.97.0.0/16

Range	ASN	Company	Num of IPs
145.97.192.0/18	AS1103	SURF B.V.	16,384
145.97.128.0/18	AS1103	Rijks Universiteit Groningen	16,384
145.97.64.0/18	AS1103	ROC Oost-Nederland	16,384
145.97.0.0/20	AS1103	SURF B.V.	4,096
145.97.48.0/20	AS1103	ROC Oost-Nederland	4,096
145.97.32.0/20	AS1145	Kennisnet Platform Content en Diensten	4,096
145.97.24.0/21	AS1103	Radboud University Nijmegen	2,048
145.97.16.0/22	AS1103	Hogeschool Leiden	1,024

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
145.97.20.10	edu.nl	1
145.97.20.20	rootcanary.org	1
145.97.23.183	catharijnecollege.nl	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
145.97.22.1	AS1103 SURF B.V.	`0.60ms` from Amsterdam, NL
145.97.20.70	AS1103 SURF B.V.	`0.56ms` from Amsterdam, NL
145.97.21.1	AS1103 SURF B.V.	`0.56ms` 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
185.54.95.230	AS201723 R. van der Meijden	`0.28ms` from Amsterdam, NL
125.35.127.182	AS4808 China Unicom Beijing Province Network	`3.29ms` from Beijing, CN
73.16.129.86	AS7922 Comcast Cable Communications, LLC	`10.87ms` from Boston, US
169.54.195.86	AS36351 IBM Cloud	`1.37ms` from Dallas, US
91.16.246.246	AS3320 Deutsche Telekom AG	`8.32ms` from Frankfurt am Main, DE
84.153.137.230	AS3320 Deutsche Telekom AG	`5.27ms` from Frankfurt am Main, DE
87.179.155.38	AS3320 Deutsche Telekom AG	`8.48ms` from Frankfurt am Main, DE
12.94.201.22	AS7018 AT&T Enterprises, LLC	`12.29ms` from Kansas City, US
112.122.136.54	AS4837 CHINA UNICOM China169 Backbone	`6.13ms` from Nanjing, CN
74.68.109.118	AS12271 Charter Communications Inc	`4.18ms` from New York City, US
50.196.49.54	AS7922 Comcast Cable Communications, LLC	`7.97ms` from New York City, US
217.80.116.6	AS3320 Deutsche Telekom AG	`4.59ms` from Nuernberg, DE
100.25.111.38	AS14618 Amazon.com, Inc.	`0.45ms` from Reston, US
177.138.223.166	AS27699 TELEFÔNICA BRASIL S.A	`2.80ms` from Sao Paulo, BR
122.221.252.134	AS17506 ARTERIA Networks Corporation	`1.14ms` from Tokyo, JP
126.121.231.246	AS17676 SoftBank Corp.	`3.30ms` from Tokyo, JP
172.174.132.246	AS8075 Microsoft Corporation	`0.49ms` from Ashburn, US
173.211.242.38	AS7029 Windstream Communications LLC	`2.13ms` from Atlanta, US
44.237.112.246	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
156.194.151.118	AS8452 TE-AS	`7.42ms` from Cairo, EG
20.90.62.22	AS8075 Microsoft Corporation	`0.18ms` from Cardiff, GB
76.242.79.102	AS7018 AT&T Enterprises, LLC	`1.86ms` from Dallas, US
94.205.20.150	AS15802 Emirates Integrated Telecommunications Company PJSC	`3.52ms` from Dubai, AE
50.189.122.118	AS7922 Comcast Cable Communications, LLC	`4.86ms` from Fremont, US
90.232.213.134	AS3301 Telia Company AB	`9.99ms` from Goeteborg, SE

Traceroute

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

traceroute -a -n -q1 -f3 145.97.20.45

traceroute to 145.97.20.45 (145.97.20.45): 64 hops max, 52 byte packets

3 [] 185.1.160.38 0.492 ms

4 [AS1103] 145.145.14.20 5.738 ms

5 [AS1103] 145.97.20.45 0.756 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On October 30th 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.

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