81.21.176.0/23

AS39244 · Teqnobase

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Summary

Country	Netherlands
Domain	iddinkgroup.nl
ASN	AS39244
Registry	RIPE
ID	TEQNOBASE-INFRDMZ

WHOIS Details

inetnum:        81.21.176.0 - 81.21.176.255
netname:        TEQNOBASE-INFRDMZ
descr:          VPNIN
country:        NL
admin-c:        AT3947-RIPE
tech-c:         EL2943-RIPE
status:         ASSIGNED PA
mnt-by:         TEQNOBASE-MNT
remarks:        infra-aw
mnt-routes:     TEQNOBASE-MNT
mnt-lower:      TEQNOBASE-MNT
created:        2009-08-12T15:01:05Z
last-modified:  2024-04-03T07:44:57Z
source:         RIPE
abuse-email:    abuse@schoologica.nl
abuse-c:        AR16287-RIPE
abuse-org:      ORG-TB13-RIPE

person:         Allard Toornstra
address:        Wiardaplantage 17
address:        8939 AA Leeuwarden
address:        The Netherlands
phone:          +31 (0) 58 298 71 71
fax-no:         +31 (0) 58 298 71 72
e-mail:         Allard.Toornstra@iddinkgroup.nl
mnt-by:         TeqnoBase-MNT
nic-hdl:        AT3947-RIPE
notify:         noc@schoolmaster.nl
created:        2006-01-03T12:16:11Z
last-modified:  2024-03-21T07:33:55Z
source:         RIPE

person:         Eric Limpens
address:        Wiardaplantage 17
address:        8939 AA Leeuwarden
address:        The Netherlands
phone:          +31 (0) 58 298 71 71
nic-hdl:        EL2943-RIPE
mnt-by:         TeqnoBase-MNT
created:        2011-10-19T13:26:19Z
last-modified:  2015-07-09T06:20:03Z
source:         RIPE

route:          81.21.176.0/20
descr:          Teqnobase block
origin:         AS39244
mnt-by:         TeqnoBase-MNT
created:        2006-01-23T09:52:10Z
last-modified:  2006-01-23T09:52:10Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.21.0.0/16

Range	ASN	Company	Num of IPs
81.21.48.0/20	AS39228	Integrated Networks Co.	4,096
81.21.32.0/20	AS16229	Primetel PLC	4,096
81.21.144.0/20	AS62862	Rapid Fiber Internet, LLC	4,096
81.21.16.0/20	AS30848	UNIDATA S.p.A.	4,096
81.21.32.0/20	AS8544	Primetel PLC	4,096
81.21.112.0/20	AS44462	Stadtwerke Muerzzuschlag GmbH	4,096
81.21.240.0/20	AS1257	Tele2 Sverige AB	4,096
81.21.136.0/21	AS28878	Signet B.V.	2,048
81.21.128.0/21	AS12505	Banco BPM S.P.A	2,048
81.21.228.0/22	AS213005	Invermae Solutions SL	1,024
81.21.232.0/22	AS203020	HostRoyale Technologies Pvt Ltd	1,024
81.21.103.0/24	AS31065	eGOV project_1	256
81.21.104.0/24	AS31065	eGOV project_2	256
81.21.105.0/24	AS31065	eGOV project_3	256
81.21.106.0/24	AS31065	National_Telecom_Regulatory_Authority_Egypt	256
81.21.107.0/24	AS31065	MCIT Network	256
81.21.108.0/24	AS31065	MCIT Network	256
81.21.109.0/24	AS31065	Ministry of Communications & IT network.	256
81.21.96.0/24	AS31065	National Telecom Regulatory Authority_2	256
81.21.97.0/24	AS31065	Ministry of Communications and Information Technology	256
81.21.99.0/24	AS31065	Egyptian Ministry of Communication and IT projects. Secondry DNS, AfriNIC whois db servers mirroring, others.	256
81.21.136.0/24	AS31586	Signet Son	256
81.21.48.0/24	AS39228	iNet Backbone Devices	256
81.21.49.0/24	AS39228	Dialup Pool 1 for iNET	256
81.21.50.0/24	AS39228	DSL Pool for iNET	256
81.21.51.0/24	AS39228	Dialup Pool 2 for iNET	256
81.21.179.0/24	AS39244	ST	256
81.21.2.0/24	AS5065	Bunny Communications LLC	256
81.21.8.0/24	AS50670	VTEL HOLDINGS LIMITED/JORDAN CO.	256
81.21.9.0/24	AS50670	VTEL HOLDINGS LIMITED/JORDAN CO.	256
81.21.1.0/24	AS834	VTEL HOLDINGS LIMITED/JORDAN CO.	256
81.21.4.0/24	AS834	VTEL HOLDINGS LIMITED/JORDAN CO.	256
81.21.7.0/24	AS834	VTEL HOLDINGS LIMITED/JORDAN CO.	256
81.21.38.0/24	AS8544	Primetel PLC	256
81.21.41.0/24	AS8544	Primetel PLC	256
81.21.46.0/24	AS8544	NetWay LTD	256
81.21.175.0/24	AS8685	DorukNet	256
81.21.47.0/24	AS16229	NetWay LTD	256
81.21.206.0/24	AS200094	PHU MIROLAN Miroslaw Weclaw	256
81.21.224.0/24	AS209041	CoreIT AB	256
81.21.225.0/24	AS209041	CoreIT AB	256
81.21.226.0/24	AS209041	CoreIT AB	256
81.21.227.0/24	AS209041	CoreIT AB	256
81.21.3.0/24	AS211440	Private Customer	256
81.21.43.0/24	AS30916	NetWay LTD	256
81.21.45.0/24	AS30916	NetWay LTD	256
81.21.102.0/24	AS31065	Egypt Radio and Television Union	256

Hosted domains

There are 3 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.21.177.5	librairiescolaire.be	2
81.21.177.6	schoolwerkplek.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

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

IP Address	ASN	Details
81.21.176.90	AS39244 Teqnobase	`3.54ms` 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
203.206.2.55	AS7545 TPG Telecom Limited	`11.25ms` from Adelaide, AU
70.135.13.23	AS7018 AT&T Enterprises, LLC	`9.91ms` from Atlanta, US
196.92.164.199	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`4.72ms` from Casablanca, MA
173.18.225.215	AS30036 Mediacom Communications Corp	`10.93ms` from Chicago, US
134.68.165.199	AS87 Indiana University	`4.04ms` from Chicago, US
185.132.39.135	AS8560 IONOS SE	`0.69ms` from London, GB
5.224.233.39	AS12430 VODAFONE ESPANA S.A.U.	`12.70ms` from Madrid, ES
51.155.233.87	AS13037 Zen Internet Ltd	`1.97ms` from Manchester, GB
223.83.223.87	AS56045 China Mobile communications corporation	`6.83ms` from Nanchang, CN
119.238.115.119	AS2518 BIGLOBE Inc.	`5.21ms` from Osaka, JP
109.189.167.231	AS2119 Telenor Norge AS	`7.89ms` from Oslo, NO
49.56.86.215	AS4766 Korea Telecom	`2.34ms` from Seoul, KR
18.155.69.199	AS16509 Amazon.com, Inc.	`0.35ms` from Singapore, SG
23.35.219.39	AS24319 Akamai Technologies Tokyo ASN	`0.23ms` from Singapore, SG
13.231.168.199	AS16509 Amazon.com, Inc.	`1.25ms` from Tokyo, JP
79.122.40.135	AS5483 Magyar Telekom Plc.	`4.56ms` from Budapest, HU
34.143.112.167	AS396982 Google LLC	`0.24ms` from Chang-hua, TW
2.102.182.135	AS13285 TalkTalk Communications Limited	`3.19ms` from Erith, GB
37.197.32.55	AS1257 Tele2 Sverige AB	`3.89ms` from Falkenberg, SE
45.143.76.7	AS12897 ENTEGA Medianet GmbH	`1.78ms` from Frankfurt am Main, DE
101.68.2.55	AS4837 CHINA UNICOM China169 Backbone	`5.38ms` from Hangzhou, CN
168.244.167.7	AS21789 Lowe's Companies, Inc.	`6.16ms` from Houston, US
219.254.114.199	AS9318 SK Broadband Co Ltd	`4.96ms` from Incheon, KR
182.186.11.7	AS17557 Pakistan Telecommunication Company Limited	`17.14ms` from Karachi, PK
2.134.37.103	AS9198 JSC Kazakhtelecom	`4.79ms` from Karagandy, KZ

Traceroute

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

traceroute -a -n -q1 -f3 81.21.176.34

traceroute to 81.21.176.34 (81.21.176.34): 64 hops max, 52 byte packets

3 [] 91.210.16.200 6.46 ms

4 [AS32787] 2.21.119.147 5.617 ms

5 [AS35467] 31.186.167.78 19.702 ms

6 [AS39244] 81.21.187.22 27.517 ms

7 [AS39244] 81.21.176.34 24.074 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On January 19th 2026

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.

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