81.173.0.0/22

AS50522 · Sewan Nederland B.V.

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Summary

Country	Netherlands
Domain	sewan.nl
ASN	AS50522
Registry	RIPE
ID	NL-POCOS-20030219

WHOIS Details

inetnum:        81.173.0.0 - 81.173.3.255
netname:        NL-POCOS-20030219
country:        NL
org:            ORG-PB32-RIPE
admin-c:        POCO
tech-c:         POCO
status:         ALLOCATED PA
mnt-by:         POCOS-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2019-12-19T11:47:11Z
last-modified:  2019-12-19T11:47:11Z
source:         RIPE
abuse-email:    abuse@sewan.nl
abuse-c:        POCO
abuse-org:      ORG-PB32-RIPE

organisation:   ORG-PB32-RIPE
org-name:       Sewan Nederland B.V.
country:        NL
org-type:       LIR
address:        Science Park 5218
address:        5692 EG
address:        Son en Breugel
address:        NETHERLANDS
phone:          +31880100700
fax-no:         +31880100799
e-mail:         ncc@sewan.nl
admin-c:        POCO
admin-c:        POCO
abuse-c:        POCO
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        POCOS-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         POCOS-MNT
created:        2010-01-15T13:31:04Z
last-modified:  2025-04-11T13:54:52Z
source:         RIPE
abuse-email:    abuse@sewan.nl
abuse-c:        POCO
abuse-org:      undefined

role:           Sewan NL NOC
address:        Sewan Nederland bv
address:        Science Park Eindhoven 5218
address:        5692 EG
address:        Son en Breugel
address:        Netherlands
phone:          +31 88 0100700
fax-no:         +31 88 0100799
e-mail:         noc@sewan.nl
abuse-mailbox:  abuse@sewan.nl
admin-c:        SVZ58-RIPE
admin-c:        SH16106-RIPE
tech-c:         SVZ58-RIPE
tech-c:         SH16106-RIPE
nic-hdl:        POCO
mnt-by:         POCOS-MNT
created:        2011-08-14T20:28:50Z
last-modified:  2025-04-11T13:52:52Z
source:         RIPE

route:          81.173.0.0/22
origin:         AS50522
mnt-by:         POCOS-MNT
created:        2019-12-19T12:47:17Z
last-modified:  2019-12-19T12:47:17Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.173.0.0/16

Range	ASN	Company	Num of IPs
81.173.128.0/17	AS8422	NetCologne Gesellschaft fur Telekommunikation mbH	32,768
81.173.104.0/21	AS12956	TELEFONICA GLOBAL SOLUTIONS SL	2,048
81.173.32.0/22	AS50522	Sewan Nederland B.V.	1,024
81.173.96.0/22	AS50522	Sewan Nederland B.V.	1,024
81.173.44.0/22	AS51942	EK-Media B.V.	1,024
81.173.12.0/22	AS56410	Leeson Telecom Holdings Ltd	1,024
81.173.36.0/22	AS200583	TINEXTA INFOCERT S.p.A	1,024
81.173.84.0/22	AS47692	METANET AG	1,024
81.173.112.0/22	AS8560	IONOS SE	1,024
81.173.40.0/23	AS198731	Prisco Electronica S.L.	512
81.173.23.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.28.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.7.0/24	AS50522	Sewan Nederland B.V.	256
81.173.21.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.41.0/24	AS198731	Prisco Electronica GPON Customers	256
81.173.11.0/24	AS199391	One System Integration LTD	256
81.173.80.0/24	AS211864	Nessus GmbH	256
81.173.124.0/24	AS24730	Garnier Projects BV	256
81.173.4.0/24	AS24730	Garnier Projects BV	256
81.173.18.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.19.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.20.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.6.0/24	AS12329	GLASFASER RUHR GmbH & Co. KG	256
81.173.22.0/24	AS4134	China Telecom (Europe) Ltd.	256

Hosted domains

There are 19 domain names hosted across 8 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.173.1.110	triple-tv.nl	10
81.173.1.108	netwerkpunt.nl	3
81.173.2.0	jordnl.com	1
81.173.2.157	schoenmakers-verhuur.nl	1
81.173.2.101	netconnect.nl	1
81.173.2.204	abchekwerk-brabant.nl	1
81.173.2.104	print-desk.nl	1
81.173.3.62	botwiz.link	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

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

IP Address	ASN	Details
81.173.0.4	AS50522 Sewan Nederland B.V.	`0.59ms` from Amsterdam, NL
81.173.1.49	AS50522 Sewan Nederland B.V.	`0.66ms` from Amsterdam, NL
81.173.2.84	AS50522 Sewan Nederland B.V.	`0.71ms` from Amsterdam, NL
81.173.3.33	AS50522 Sewan Nederland B.V.	`1.11ms` 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
211.26.61.118	AS9443 Vocus Retail	`9.46ms` from Adelaide, AU
170.163.129.134	AS10583 Connecticut Hospital Assoc.	`5.94ms` from Boston, US
190.210.33.198	AS16814 NSS S.A.	`0.38ms` from Buenos Aires, AR
211.125.108.22	AS9622 Kurashiki Cable TV	`3.25ms` from Osaka, JP
72.14.176.134	AS63949 Akamai Connected Cloud	`0.14ms` from Richardson, US
128.32.240.6	AS25 University of California at Berkeley	`2.81ms` from San Jose, US
125.134.111.6	AS4766 Korea Telecom	`6.27ms` from Seoul, KR
210.93.7.246	AS4766 Korea Telecom	`5.36ms` from Seoul, KR
134.185.82.150	AS31898 Oracle Corporation	`0.15ms` from Singapore, SG
172.72.87.230	AS11426 Charter Communications Inc	`7.49ms` from Charlotte, US
23.27.182.214	AS214025 Synergy Dynamics Ltd	`0.45ms` from Frankfurt am Main, DE
217.249.109.6	AS3320 Deutsche Telekom AG	`7.45ms` from Frankfurt am Main, DE
183.47.240.86	AS4134 CHINANET-BACKBONE	`2.58ms` from Guangzhou, CN
168.76.153.54	AS137951 ASLINE LIMITED	`0.76ms` from Hong Kong, HK
124.93.205.134	AS4837 CHINA UNICOM China169 Backbone	`11.40ms` from Liaoyang, CN
6.4.26.150	AS668 United States Department of Defense (DoD)	`1.78ms` from Los Angeles, US
187.150.87.182	AS8151 UNINET	`12.27ms` from Miami, US
8.243.36.54	AS3356 Level 3 Parent, LLC	`0.19ms` from Osasco, BR
109.197.215.70	AS24589 Telenet SIA	`0.44ms` from Riga, LV
75.36.6.214	AS7018 AT&T Enterprises, LLC	`4.13ms` from San Jose, US
174.160.42.150	AS7922 Comcast Cable Communications, LLC	`5.06ms` from San Jose, US
84.214.83.150	AS25400 Telia Norge AS	`8.45ms` from Sandefjord, NO
63.217.24.182	AS3491 PCCW Global, Inc.	`0.20ms` from Singapore, SG
81.223.168.214	AS8412 T-Mobile Austria GmbH	`1.00ms` from Vienna, AT
68.72.89.182	AS7018 AT&T Enterprises, LLC	`4.07ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f3 81.173.3.81

traceroute to 81.173.3.81 (81.173.3.81): 64 hops max, 52 byte packets

3 [AS50522] 81.173.74.66 14.396 ms

4 [AS50522] 81.173.3.81 15.218 ms

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On December 28th 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.

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