145.81.0.0/16

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:        145.81.0.0 - 145.81.255.255
netname:        SURFNET-EARLY-REGISTRATIONS
descr:          SURFnet bv
descr:          P.O. Box 19035
descr:          Utrecht
descr:          3501 DA
org:            ORG-Sb3-RIPE
country:        NL
admin-c:        SNS1-RIPE
tech-c:         SNS1-RIPE
status:         LEGACY
remarks:        ---------------------------------------------------
remarks:        Use only [email protected] 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-routes:     AS1103-MNT
created:        2019-06-06T13:01:51Z
last-modified:  2019-06-06T13:01:51Z
source:         RIPE
abuse-email:    [email protected]
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:         [email protected]
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:    [email protected]
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:  [email protected]
mnt-by:         AS1103-MNT
created:        2002-07-09T10:06:06Z
last-modified:  2025-11-05T14:44:07Z
source:         RIPE
e-mail:         [email protected]

route:          145.81.0.0/16
descr:          HOHONET
origin:         AS1103
notify:         [email protected]
mnt-by:         AS1103-MNT
created:        2002-02-27T13:45:19Z
last-modified:  2019-03-21T09:01:45Z
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
145.51.0.0/16	AS1103	Hogeschool Rotterdam & Omstreken	65,536
145.220.0.0/16	AS1101	SURF B.V.	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
145.108.0.0/16	AS1103	Vrije Universiteit Amsterdam	65,536
145.232.0.0/16	AS15675	Etat de Vaud, CCT	65,536
145.236.0.0/16	AS1902	Budapest	65,536
145.55.0.0/16	AS16509	A100 ROW Inc	65,536
145.247.0.0/16	AS41701	Porkkalankatu 3	65,536
145.86.0.0/16	AS15830	Medisch Spectrum Twente	65,536
145.126.0.0/16	AS1103	SURFnet bv	65,536
145.239.0.0/16	AS16276	OVH SAS	65,536
145.238.0.0/16	AS2200	Observatoire de Paris	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
145.82.0.0/16	AS25019	Saudi Telecom Company JSC	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
145.31.0.0/16	AS42894	Ministerie van Verkeer en Waterstaat/Rijkswaterstaat	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
145.95.0.0/16	AS1103	SURF B.V.	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
145.243.0.0/16	AS8792	Axel Springer SE	65,536
145.244.0.0/16	AS210543	Steiermaerkische Krankenanstalten GesmbH	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
35.83.244.240	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
162.198.193.224	AS7018 AT&T Enterprises, LLC	`10.03ms` from Chicago, US
91.0.31.160	AS3320 Deutsche Telekom AG	`1.25ms` from Duesseldorf, DE
87.148.186.16	AS3320 Deutsche Telekom AG	`9.39ms` from Frankfurt am Main, DE
125.210.196.16	AS24139 Huashu media&Network Limited	`4.28ms` from Hangzhou, CN
223.184.27.48	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.10ms` from Hyderabad, IN
195.194.248.160	AS786 Jisc Services Limited	`2.88ms` from London, GB
85.6.227.64	AS3303 Swisscom (Switzerland) Ltd	`1.60ms` from Lugano, CH
57.154.81.160	AS8075 Microsoft Corporation	`0.19ms` from Phoenix, US
34.192.181.160	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
190.215.13.144	AS18822 Manquehuenet	`1.46ms` from Santiago, CL
211.214.185.112	AS9318 SK Broadband Co Ltd	`1.97ms` from Seoul, KR
203.181.226.32	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`8.73ms` from Tokyo, JP
96.49.198.64	AS6327 Shaw Communications	`7.31ms` from Vancouver, CA
15.197.140.80	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
45.7.5.0	AS266613 COMMTEL TRANSMISSAO DE DADOS E INTERNET LTDA	`0.28ms` from Brasilia, BR
131.255.30.96	AS264448 NEOLOG TECNOLOGIA LTDA	`14.38ms` from Fortaleza, BR
141.239.211.176	AS36149 Hawaiian Telcom Services Company, Inc.	`1.37ms` from Honolulu, US
34.154.26.208	AS396982 Google LLC	`0.10ms` from Milan, IT
98.225.203.16	AS7922 Comcast Cable Communications, LLC	`11.53ms` from Morris Plains, US
71.190.80.96	AS701 Verizon Business	`7.83ms` from New York City, US
222.12.142.16	AS2516 KDDI CORPORATION	`11.15ms` from Osaka, JP
78.81.208.240	AS16301 Novgorod Datacom LLC	`5.99ms` from Saint Petersburg, RU
125.240.16.16	AS17858 LG POWERCOMM	`2.24ms` from Seoul, KR
14.52.140.16	AS4766 Korea Telecom	`1.51ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f4 -m12 145.81.61.113

traceroute to 145.81.61.113 (145.81.61.113): 12 hops max, 52 byte packets

4 [] 80.249.208.50 24 ms

5 [AS1103] 145.145.191.211 25.34 ms

6 [AS1103] 145.145.176.71 25.361 ms

7 [AS1103] 145.145.176.163 26.424 ms

8 [AS1103] 145.145.4.161 25.22 ms

9 [AS1103] 145.145.4.162 27.645 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Gdynia, PL

On December 6th 2025

What are IP address ranges?

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