145.97.24.0/21

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	ru.nl
ASN	AS1103
Registry	RIPE
ID	RU-NET

WHOIS Details

inetnum:        145.97.24.0 - 145.97.31.255
org:            ORG-RU11-RIPE
netname:        RU-NET
descr:          Radboud University Nijmegen
country:        NL
admin-c:        IIRU1-RIPE
tech-c:         IIRU1-RIPE
status:         LEGACY
mnt-by:         SN-LIR-MNT
mnt-by:         SURF-AUTO-MNT
mnt-irt:        irt-SURFcert
created:        2011-12-16T06:39:39Z
last-modified:  2025-10-02T17:29:22Z
source:         RIPE
abuse-email:    cert@ru.nl
abuse-c:        IIRU1-RIPE
abuse-org:      ORG-RU11-RIPE

organisation:   ORG-RU11-RIPE
org-name:       Radboud Universiteit Nijmegen
country:        NL
org-type:       OTHER
address:        P.O. box 9101
address:        NL-6500 HB
address:        Nijmegen
address:        the Netherlands
phone:          +31243617959
e-mail:         noc-isc@ru.nl
mnt-by:         SN-LIR-MNT
mnt-ref:        SN-LIR-MNT
abuse-c:        IIRU1-RIPE
created:        2015-05-18T12:56:12Z
last-modified:  2022-12-01T17:31:35Z
source:         RIPE
abuse-email:    cert@ru.nl
abuse-c:        IIRU1-RIPE
abuse-org:      undefined

role:           ISC IT-services Radboud University
address:        Geert Grooteplein 41
address:        NL 6525 GA
address:        Nijmegen
address:        Netherlands
phone:          +31 2436 17959
e-mail:         noc-isc@ru.nl
nic-hdl:        IIRU1-RIPE
abuse-mailbox:  cert@ru.nl
remarks:        Use cert@ru.nl or abuse@ru.nl to report security incidents and abuse.
mnt-by:         SN-LIR-MNT
created:        2017-11-21T15:42:36Z
last-modified:  2017-11-21T15:42:36Z
source:         RIPE

route:          145.97.24.0/21
descr:          UCI-NET
origin:         AS1103
mnt-by:         AS1103-MNT
created:        2013-03-13T13:52:26Z
last-modified:  2013-03-13T13:52:26Z
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
145.97.16.0/22	AS1103	Hogeschool Leiden	1,024
145.97.20.0/22	AS1103	SURFnet SURFcloud	1,024

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
54.203.101.149	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
222.197.183.85	AS4538 China Education and Research Network Center	`5.10ms` from Chengdu, CN
209.34.51.53	AS6300 Fidium	`5.24ms` from Dallas, US
102.115.65.165	AS23889 Mauritius Telecom Ltd	`4.35ms` from Ebene, MU
110.232.83.117	AS23679 PT. Media Antar Nusa	`0.55ms` from Medan, ID
88.38.133.53	AS3269 Telecom Italia S.p.A.	`4.52ms` from Milan, IT
24.183.51.149	AS20115 Charter Communications LLC	`18.16ms` from Milwaukee, US
210.157.253.197	AS7522 STNet, Incorporated	`4.10ms` from Osaka, JP
186.238.194.69	AS10429 TELEFÔNICA BRASIL S.A	`1.72ms` from Osasco, BR
115.8.255.69	AS4766 Korea Telecom	`6.66ms` from Seoul, KR
1.249.249.53	AS9318 SK Broadband Co Ltd	`7.42ms` from Seoul, KR
52.95.227.213	AS16509 Amazon.com, Inc.	`0.16ms` from Stockholm, SE
180.181.228.213	AS4764 Aussie Broadband	`0.66ms` from Sydney, AU
4.147.65.181	AS8075 Microsoft Corporation	`0.69ms` from Sydney, AU
89.161.179.133	AS12824 home.pl S.A.	`0.82ms` from Warsaw, PL
104.16.157.245	AS13335 Cloudflare, Inc.	`0.11ms` from Wrocław, PL
58.48.59.117	AS4134 CHINANET-BACKBONE	`1.21ms` from Wuhan, CN
37.29.46.165	AS31224 PJSC MegaFon	`16.43ms` from Yekaterinburg, RU
80.60.39.53	AS1136 KPN B.V.	`1.12ms` from Amsterdam, NL
203.195.98.21	AS7693 KSC Commercial Internet Co. Ltd.	`0.49ms` from Bangkok, TH
59.69.163.21	AS4538 China Education and Research Network Center	`19.94ms` from Beijing, CN
143.208.101.245	AS264465 LINK DATA INTERNET	`16.82ms` from Brasilia, BR
98.46.225.53	AS7922 Comcast Cable Communications, LLC	`6.49ms` from Chicago, US
80.74.244.69	AS21267 Wavenet Limited	`2.08ms` from London, GB
172.250.212.53	AS20001 Charter Communications Inc	`6.19ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -f4 -m13 145.97.30.148

traceroute to 145.97.30.148 (145.97.30.148): 13 hops max, 52 byte packets

4 [AS9044] 212.101.0.73 16.592 ms

5 [AS9044] 212.101.0.75 27.801 ms

6 [] 80.249.208.34 26.937 ms

7 *

8 *

9 [AS1103] 145.145.8.81 30.91 ms

10 [AS1103] 145.145.8.82 29.925 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Solothurn, CH

On December 6th 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