1. All IP Ranges
  2. 143.0.0.0/8
  3. 143.121.0.0/16
  4. AS1103  | 143.121.0.0/16

143.121.0.0/16

AS1103  ·  SURF B.V.

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Summary

Country Netherlands
Domain hetwkz.nl
ASN AS1103
Registry RIPE
ID UMCU

WHOIS Details

inetnum:        143.121.0.0 - 143.121.255.255
netname:        UMCU
descr:          Universitair Medisch Centrum Utrecht
country:        NL
admin-c:        UNS5-RIPE
tech-c:         UNS5-RIPE
status:         LEGACY
mnt-by:         SN-LIR-MNT
mnt-irt:        irt-SURFcert
created:        1970-01-01T00:00:00Z
last-modified:  2019-05-28T08:47:15Z
source:         RIPE

role:           UMCU Netwerk & Security
address:        Universitair Medisch Centrum Utrecht
phone:          +31(0)88 75 50700
e-mail:         [email protected]
nic-hdl:        UNS5-RIPE
mnt-by:         SN-LIR-MNT
created:        2019-05-28T08:39:41Z
last-modified:  2019-05-28T08:39:41Z
source:         RIPE

route:          143.121.0.0/16
descr:          netname: AZUTRECHT
descr:          Academic Hospital Utrecht
descr:          Utrecht
origin:         AS1103
mnt-by:         AS1103-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T09:31:59Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 143.0.0.0/8

Range ASN Company Num of IPs
143.118.0.0/16 AS1881 FMV 65,536
143.248.0.0/16 AS1781 Korea Advanced Institute of Science and Technology 65,536
143.88.0.0/16 AS18553 University of West Florida 65,536
143.253.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.206.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.240.0.0/16 AS174 Performance Systems International, Incorporated 65,536
143.171.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.214.0.0/16 AS1602 Headquarters, USAISC 65,536
143.168.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.135.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.212.0.0/16 AS1602 Headquarters, USAISC 65,536
143.191.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.221.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.227.0.0/16 AS16509 Amazon.com, Inc. 65,536
143.59.0.0/16 AS12083 WideOpenWest Finance LLC 65,536
143.74.0.0/16 AS1540 Headquarters, USAISC 65,536
143.205.0.0/16 AS1111 Universitaet Klagenfurt 65,536
143.213.0.0/16 AS1602 Headquarters, USAISC 65,536
143.45.0.0/16 AS1649 Headquarters, USAISC 65,536
143.74.0.0/16 AS1637 Headquarters, USAISC 65,536
143.170.0.0/16 AS16504 Granite Telecommunications LLC 65,536
143.74.0.0/16 AS1516 Headquarters, USAISC 65,536
143.84.0.0/16 AS1540 Headquarters, USAISC 65,536
143.79.0.0/16 AS1540 Headquarters, USAISC 65,536
143.67.0.0/16 AS13536 Jamestown Community College 65,536
143.239.0.0/16 AS1213 Campus Network 65,536
143.50.0.0/16 AS1114 Universitaet Graz 65,536
143.74.0.0/16 AS1600 Headquarters, USAISC 65,536
143.84.0.0/16 AS1590 Headquarters, USAISC 65,536
143.69.0.0/16 AS1590 Headquarters, USAISC 65,536
143.238.0.0/16 AS1221 Telstra Limited 65,536
143.101.0.0/16 AS13636 NEC Corporation of America 65,536
143.102.0.0/16 AS13636 NEC Corporation of America 65,536
143.164.0.0/16 AS12331 Audi AG, Ingolstadt 65,536
143.216.0.0/16 AS136572 The Office of the Chief Information Officer (OCIO) 65,536
143.108.0.0/16 AS1251 FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO 65,536
143.225.0.0/16 AS137 UNI-Napoli Federico II 65,536
143.176.0.0/16 AS13127 Tele2 Nederland B.V. 65,536
143.69.0.0/16 AS1540 Headquarters, USAISC 65,536
143.46.0.0/16 AS1637 Headquarters, USAISC 65,536
143.48.0.0/16 AS13748 Cold Spring Harbor Laboratory 65,536
143.73.0.0/16 AS1501 Headquarters, USAISC 65,536
143.69.0.0/16 AS1493 Headquarters, USAISC 65,536
143.76.0.0/16 AS1501 Headquarters, USAISC 65,536
143.76.0.0/16 AS1502 Headquarters, USAISC 65,536
143.111.0.0/16 AS11773 The University Of Texas M.D. Anderson Cancer Center 65,536
143.76.0.0/16 AS1540 Headquarters, USAISC 65,536
143.66.0.0/16 AS13536 Corning Community College 65,536
143.207.0.0/16 AS19106 Andrews University 65,536

Hosted domains

There are 268 domain names hosted across 31 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
143.121.245.42 obesitasenzwangerschap.nl 153
143.121.245.41 icat-utrecht.nl 36
143.121.197.36 juliuscenter.com 24
143.121.245.30 vergiftiging.eu 16
143.121.197.21 mbi-lifesciencesandhealth.com 8
143.121.238.19 kinderziekenhuiswilhelmina.nl 4
143.121.197.38 elevate.nu 3
143.121.197.32 covidprecise.org 3
143.121.197.15 epidemiologyonline.org 2
143.121.245.44 ikwerkbijumcutrecht.nl 2
143.121.245.34 mijnpazio.nl 2
143.121.197.23 apothekerbijdehuisarts.nl 2
143.121.245.29 productnotification.nl 2
143.121.197.12 juliuscenter.nl 2
143.121.241.172 toxicologie.eu 1
143.121.179.128 metaverifiedsupport.net 1
143.121.197.19 grace-lrti.org 1
143.121.197.34 jc-datacenter.nl 1
143.121.196.247 cmc-utrecht.nl 1
143.121.197.29 ksc-utrecht.nl 1

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

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

IP Address ASN Details
143.121.196.248 AS1103 SURF B.V. 1.43ms from Amsterdam, NL
143.121.197.40 AS1103 SURF B.V. 1.44ms from Amsterdam, NL
143.121.243.253 AS1103 SURF B.V. 1.41ms from Amsterdam, NL
143.121.237.82 AS1103 SURF B.V. 2.20ms from Amsterdam, NL
143.121.222.235 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
87.202.22.64 AS6799 Ote SA (Hellenic Telecommunications Organisation) 11.50ms from Athens, GR
35.94.34.112 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
102.187.1.240 AS24835 Vodafone Data 11.74ms from Cairo, EG
197.79.11.48 AS37611 AFRIHOST SP (PTY) LTD 18.51ms from Cape Town, ZA
76.182.22.160 AS11426 Charter Communications Inc 10.86ms from Charlotte, US
64.108.8.0 AS7018 AT&T Enterprises, LLC 0.60ms from Chicago, US
75.19.21.0 AS7018 AT&T Enterprises, LLC 7.77ms from Columbus, US
36.69.156.64 AS7713 PT Telekomunikasi Indonesia 1.69ms from Jakarta, ID
23.42.247.48 AS16625 Akamai Technologies, Inc. 0.08ms from Johannesburg, ZA
196.30.161.128 AS16637 MTN SA 1.15ms from Johannesburg, ZA
34.54.68.64 AS396982 Google LLC 0.08ms from Melbourne, AU
2.229.193.176 AS12874 Fastweb SpA 4.13ms from Milan, IT
178.124.237.176 AS6697 Republican Unitary Telecommunication Enterprise Beltelecom 7.75ms from Minsk, BY
71.230.141.48 AS7922 Comcast Cable Communications, LLC 7.01ms from Morris Plains, US
158.160.179.48 AS200350 Yandex.Cloud LLC 2.46ms from Moscow, RU
210.228.55.112 AS2516 KDDI CORPORATION 6.40ms from Osaka, JP
98.89.202.176 AS14618 Amazon.com, Inc. 0.19ms from Reston, US
136.36.82.96 AS16591 Google Fiber Inc. 1.49ms from Salt Lake City, US
76.237.200.112 AS7018 AT&T Enterprises, LLC 3.77ms from San Antonio, US
75.218.53.144 AS6167 Verizon Business 7.48ms from San Jose, US
187.136.115.32 AS8151 UNINET 14.02ms from Santiago de Queretaro, MX
71.216.14.64 AS209 CenturyLink Communications, LLC 2.79ms from Seattle, US
27.117.36.0 AS17857 SK Broadband Co Ltd 8.48ms from Seoul, KR
221.143.138.48 AS9318 SK Broadband Co Ltd 1.87ms from Seoul, KR
150.249.42.144 AS2527 Sony Network Communications Inc. 1.49ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f4 -m16 143.121.11.58
traceroute to 143.121.11.58 (143.121.11.58): 16 hops max, 52 byte packets
4 [AS8452] 81.10.87.134 50.686 ms
5 *
6 [AS3257] 212.221.1.197 49.281 ms
7 [AS3257] 141.136.110.41 55.355 ms
8 *
10 [AS3257] 212.221.90.177 61.179 ms
11 *
12 [AS1103] 145.145.16.65 59.973 ms
13 [AS1103] 145.145.16.66 60.503 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Cairo, EG
On

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.

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