81.21.136.0/21

AS28878 · Signet B.V.

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Summary

Country	Netherlands
Domain	signet.nl
ASN	AS28878
Registry	RIPE
ID	NL-SIGNET-20110118

WHOIS Details

inetnum:        81.21.136.0 - 81.21.143.255
netname:        NL-SIGNET-20110118
country:        NL
org:            ORG-SI6-RIPE
admin-c:        SGNT1-RIPE
tech-c:         SGNT1-RIPE
status:         ALLOCATED PA
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SIGNET-MNT
mnt-lower:      SIGNET-MNT
mnt-domains:    SIGNET-MNT
mnt-routes:     SIGNET-MNT
created:        2011-01-18T08:26:52Z
last-modified:  2016-06-10T15:54:51Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        SAD68-RIPE
abuse-org:      ORG-SI6-RIPE

organisation:   ORG-SI6-RIPE
org-name:       Signet B.V.
country:        NL
org-type:       LIR
address:        Achtseweg Zuid 241 B
address:        5651GW
address:        Eindhoven
address:        NETHERLANDS
phone:          +31885999999
e-mail:         [email protected]
admin-c:        AR22154-RIPE
admin-c:        SNaA1-RIPE
admin-c:        JS9938-RIPE
admin-c:        RB1994-RIPE
abuse-c:        SAD68-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SIGNET-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SIGNET-MNT
created:        2004-04-17T11:43:17Z
last-modified:  2025-07-07T08:55:39Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        SAD68-RIPE
abuse-org:      undefined

role:           Signet B.V. Technical Role Account
address:        Signet B.V.
address:        Science Park Eindhoven 5218
address:        5692 EG Son
address:        The Netherlands
phone:          +31 40 7074907
phone:          +31 40 7074909
abuse-mailbox:  [email protected]
admin-c:        RB1994-RIPE
admin-c:        JS9938-RIPE
tech-c:         RB1994-RIPE
tech-c:         JS9938-RIPE
e-mail:         [email protected]
remarks:        ==========================================
remarks:        Please send abuse mail to [email protected],
remarks:        technical issues to [email protected] and
remarks:        peering requests to [email protected].
remarks:        ==========================================
nic-hdl:        SGNT1-RIPE
mnt-by:         SIGNET-MNT
created:        2014-04-03T08:32:01Z
last-modified:  2025-07-07T08:56:13Z
source:         RIPE

route:          81.21.136.0/21
descr:          SIGNETNL
origin:         AS28878
mnt-lower:      SIGNET-MNT
mnt-routes:     SIGNET-MNT
mnt-by:         SIGNET-MNT
created:        2011-01-18T15:39:06Z
last-modified:  2011-01-18T15:39:06Z
source:         RIPE

Overlapping Ranges

BGP prefixes that are contained by 81.21.136.0/21

Range	ASN	Company	Num of IPs
81.21.136.0/24	AS31586	Signet Son	256

Nearby Ranges

BGP prefixes that overlap with 81.21.0.0/16

Range	ASN	Company	Num of IPs
81.21.16.0/20	AS30848	UNIDATA S.p.A.	4,096
81.21.240.0/20	AS1257	Tele2 Sverige AB	4,096
81.21.32.0/20	AS16229	Primetel PLC	4,096
81.21.144.0/20	AS62862	Rapid Fiber Internet, LLC	4,096
81.21.112.0/20	AS44462	Stadtwerke Muerzzuschlag GmbH	4,096
81.21.48.0/20	AS39228	Integrated Networks Co.	4,096
81.21.32.0/20	AS8544	Primetel PLC	4,096
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
81.21.102.0/24	AS31065	Egypt Radio and Television Union	256
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
81.21.7.0/24	AS63199	Private Customer	256
81.21.1.0/24	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
81.21.4.0/24	AS203728	BAHU LTD	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

Hosted domains

There are 239 domain names hosted across 20 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.21.139.187	vectorpeaklabs.com	3
81.21.138.197	durastyle-vensterbanken.nl	3
81.21.138.97	dolden.net	1
81.21.138.87	vaneyden.nl	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
81.21.138.85	AS28878 Signet B.V.	`2.47ms` from Amsterdam, NL
81.21.140.33	AS28878 Signet B.V.	`0.55ms` from Amsterdam, NL
81.21.141.186	AS28878 Signet B.V.	`0.59ms` from Amsterdam, NL
81.21.136.254	AS31586 Signet B.V.	`0.57ms` from Amsterdam, NL
81.21.137.137	AS28878 Signet B.V.	`1.00ms` 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
185.26.182.101	AS39832 Opera Norway AS	`0.22ms` from Amsterdam, NL
75.183.44.37	AS11426 Charter Communications Inc	`11.42ms` from Charlotte, US
112.52.37.53	AS9808 China Mobile Communications Group Co., Ltd.	`6.09ms` from Fuzhou, CN
147.81.142.69	AS36149 Hawaiian Telcom Services Company, Inc.	`7.10ms` from Honolulu, US
188.227.165.69	AS20860 IOMART CLOUD SERVICES LIMITED	`3.10ms` from London, GB
45.51.228.165	AS20001 Charter Communications Inc	`6.52ms` from Los Angeles, US
151.32.112.149	AS1267 WIND TRE S.P.A.	`3.71ms` from Milan, IT
192.84.137.21	AS137 Consortium GARR	`2.06ms` from Milan, IT
171.39.100.149	AS4837 CHINA UNICOM China169 Backbone	`8.21ms` from Nanning, CN
180.147.128.149	AS17511 OPTAGE Inc.	`1.83ms` from Osaka, JP
90.110.67.37	AS3215 Orange S.A.	`9.75ms` from Paris, FR
79.11.18.21	AS3269 Telecom Italia S.p.A.	`7.70ms` from Rome, IT
174.27.197.101	AS209 CenturyLink Communications, LLC	`10.63ms` from Seattle, US
94.155.153.37	AS9070 Cooolbox AD	`2.55ms` from Sofia, BG
1.0.149.229	AS23969 TOT Public Company Limited	`10.34ms` from Bangkok, TH
114.116.120.69	AS23724 IDC, China Telecommunications Corporation	`3.79ms` from Beijing, CN
185.174.185.5	AS206841 Everko SASU	`0.57ms` from Brussels, BE
65.27.27.165	AS10796 Charter Communications Inc	`17.62ms` from Chicago, US
34.171.170.69	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
58.65.184.117	AS23674 Nayatel (Pvt) Ltd	`1.67ms` from Islamabad, PK
58.56.222.213	AS4134 CHINANET-BACKBONE	`6.38ms` from Jinan, CN
93.109.121.101	AS6866 Cyprus Telecommunications Authority	`2.62ms` from Larnaca, CY
4.43.33.229	AS3356 Level 3 Parent, LLC	`1.20ms` from Los Angeles, US
176.123.174.101	AS29182 JSC IOT	`0.34ms` from Moscow, RU
76.116.19.133	AS7922 Comcast Cable Communications, LLC	`6.54ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f2 81.21.140.37

traceroute to 81.21.140.37 (81.21.140.37): 64 hops max, 52 byte packets

2 [AS56911] 185.169.236.216 0.269 ms

3 [] 80.249.209.148 1.105 ms

4 [AS49685] 80.246.207.125 1.379 ms

5 [AS28878] 81.21.140.37 0.668 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On December 15th 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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