145.0.0.0/16

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:        145.0.0.0 - 145.0.255.255
netname:        SURFNET-EARLY-REGISTRATIONS
descr:          SURFnet bv
org:            ORG-Sb3-RIPE
country:        NL
admin-c:        SNS1-RIPE
tech-c:         SNS1-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
remarks:        ---------------------------------------------------
remarks:        Use only cert@surfnet.nl to report security incidents.
remarks:        See also http://cert.surfnet.nl/ for more information.
remarks:        ---------------------------------------------------
mnt-by:         SN-LIR-MNT
mnt-lower:      SN-LIR-MNT
mnt-lower:      SURF-AUTO-MNT
mnt-routes:     AS1103-MNT
created:        2017-04-13T14:07:48Z
last-modified:  2025-10-02T17:29:07Z
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
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:          145.0.0.0/16
descr:          Early registrations SURFnet bv
origin:         AS1103
notify:         lir@surfnet.nl
mnt-by:         AS1103-MNT
created:        2005-03-07T11:05:31Z
last-modified:  2019-03-21T09:01:43Z
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
145.82.0.0/16	AS25019	Saudi Telecom Company JSC	65,536
145.95.0.0/16	AS1103	SURF B.V.	65,536
145.244.0.0/16	AS210543	Steiermaerkische Krankenanstalten GesmbH	65,536
145.222.0.0/16	AS21286	KPN B.V.	65,536
145.238.0.0/16	AS2200	Observatoire de Paris	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
145.234.0.0/16	AS206567	Tamedia AG	65,536
145.243.0.0/16	AS200757	Axel Springer SE	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
145.53.0.0/16	AS1136	KPN B.V.	65,536
145.86.0.0/16	AS15830	Medisch Spectrum Twente	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
145.94.0.0/16	AS1128	Delft University of Technology Network	65,536
145.110.0.0/16	AS1104	NIKHEF	65,536
145.41.0.0/16	AS1103	SURF B.V.	65,536
145.44.0.0/16	AS1103	Christelijke Hogeschool Windesheim	65,536
145.18.0.0/16	AS1124	Universiteit van Amsterdam	65,536
145.5.0.0/16	AS1103	Erasmus University 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
145.13.0.0/16	AS21286	F&IT RIM - OsirisNG, Zoetermeer	65,536

Hosted domains

There are 19 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
145.0.2.50	geant.amsterdam	11
145.0.6.43	edumeet.eu	3
145.0.6.62	geteduroam.app	3
145.0.6.226	surfquizmas.nl	1
145.0.6.61	csirt.nl	1

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
145.0.6.199	AS1103 SURF B.V.	`0.54ms` from Amsterdam, NL
145.0.0.1	AS1103 SURF B.V.	`0.53ms` from Amsterdam, NL
145.0.7.126	AS1103 SURF B.V.	`0.51ms` from Amsterdam, NL
145.0.1.1	AS1103 SURF B.V.	`0.70ms` from Amsterdam, NL
145.0.9.1	AS1103 SURF B.V.	`0.70ms` from Amsterdam, NL
145.0.2.253	AS1103 SURF B.V.	`0.66ms` from Amsterdam, NL
145.0.3.1	AS1103 SURF B.V.	`1.39ms` 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
173.245.84.144	AS5650 Frontier Communications of America, Inc.	`0.21ms` from Ashburn, US
101.200.157.128	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.15ms` from Beijing, CN
75.69.129.128	AS7922 Comcast Cable Communications, LLC	`14.18ms` from Boston, US
98.19.249.240	AS7029 Windstream Communications LLC	`11.49ms` from Chicago, US
129.217.16.64	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`4.52ms` from Frankfurt am Main, DE
183.145.90.48	AS4134 CHINANET-BACKBONE	`7.00ms` from Hangzhou, CN
93.109.202.112	AS6866 Cyprus Telecommunications Authority	`13.70ms` from Nicosia, CY
76.5.40.0	AS209 CenturyLink Communications, LLC	`0.60ms` from Orlando, US
213.174.101.208	AS29283 Hub One SA	`0.91ms` from Paris, FR
34.206.119.112	AS14618 Amazon.com, Inc.	`0.14ms` from Reston, US
173.254.85.64	AS46606 Unified Layer	`1.95ms` from Salt Lake City, US
125.7.178.16	AS4766 Korea Telecom	`0.98ms` from Seoul, KR
114.204.56.32	AS9318 SK Broadband Co Ltd	`2.72ms` from Seoul, KR
85.130.91.0	AS13124 A1 Bulgaria EAD	`4.06ms` from Sofia, BG
51.16.194.80	AS16509 Amazon.com, Inc.	`1.24ms` from Tel Aviv, IL
81.218.175.192	AS8551 Bezeq International Ltd.	`1.93ms` from Tel Aviv, IL
72.38.25.16	AS7992 Cogeco Connexion Inc.	`8.38ms` from Toronto, CA
148.153.161.144	AS63199 CDS Global Cloud Co., Ltd	`0.24ms` from Ashburn, US
73.69.185.224	AS7922 Comcast Cable Communications, LLC	`11.88ms` from Boston, US
13.77.102.144	AS8075 Microsoft Corporation	`0.32ms` from Boydton, US
34.40.76.96	AS396982 Google LLC	`0.12ms` from Frankfurt am Main, DE
76.134.141.0	AS7922 Comcast Cable Communications, LLC	`8.87ms` from Miami, US
142.115.214.240	AS577 Bell Canada	`11.65ms` from Montreal, CA
93.109.124.80	AS6866 Cyprus Telecommunications Authority	`2.21ms` from Nicosia, CY
14.13.130.64	AS2516 KDDI CORPORATION	`3.44ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f3 -m7 145.0.59.235

traceroute to 145.0.59.235 (145.0.59.235): 7 hops max, 52 byte packets

3 [AS5416] 88.201.64.233 0.727 ms

4 [AS5416] 88.201.100.26 1.127 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Manama, BH

On October 30th 2025

What are IP address ranges?

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