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:         signet@signet.nl
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:    abuse@signet.nl
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:         noc@signet.nl
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:    abuse@signet.nl
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:  abuse@signet.nl
admin-c:        RB1994-RIPE
admin-c:        JS9938-RIPE
tech-c:         RB1994-RIPE
tech-c:         JS9938-RIPE
e-mail:         noc@signet.nl
remarks:        ==========================================
remarks:        Please send abuse mail to abuse@signet.nl,
remarks:        technical issues to noc@signet.nl and
remarks:        peering requests to peering@signet.nl.
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
81.21.138.87	vaneyden.nl	1
81.21.138.97	dolden.net	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
81.21.141.186	AS28878 Signet B.V.	`0.63ms` from Amsterdam, NL
81.21.138.85	AS28878 Signet B.V.	`2.56ms` from Amsterdam, NL
81.21.137.137	AS28878 Signet B.V.	`1.06ms` from Amsterdam, NL
81.21.136.254	AS31586 Signet B.V.	`0.59ms` from Amsterdam, NL
81.21.140.38	AS28878 Signet B.V.	`0.49ms` 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
100.48.188.133	AS14618 Amazon.com, Inc.	`0.69ms` from Ashburn, US
136.47.211.5	AS16591 Google Fiber Inc.	`6.99ms` from Ashburn, US
20.84.24.101	AS8075 Microsoft Corporation	`0.39ms` from Ashburn, US
23.45.80.21	AS9500 One New Zealand Group Limited	`8.58ms` from Auckland, NZ
189.247.17.21	AS8151 UNINET	`14.09ms` from Dallas, US
54.78.133.69	AS16509 Amazon.com, Inc.	`0.33ms` from Dublin, IE
212.226.174.117	AS719 Elisa Oyj	`0.62ms` from Helsinki, FI
42.178.27.197	AS4837 CHINA UNICOM China169 Backbone	`12.19ms` from Liaoyang, CN
60.22.81.101	AS4837 CHINA UNICOM China169 Backbone	`8.45ms` from Liaoyang, CN
134.69.26.5	AS14486 Occidental College	`1.65ms` from Los Angeles, US
86.248.86.69	AS3215 Orange S.A.	`2.97ms` from Lyon, FR
87.26.15.21	AS3269 Telecom Italia S.p.A.	`4.65ms` from Milan, IT
95.167.177.245	AS12389 PJSC Rostelecom	`16.48ms` from Moscow, RU
67.78.1.53	AS33363 Charter Communications, Inc	`9.90ms` from Orlando, US
90.78.212.69	AS3215 Orange S.A.	`18.11ms` from Paris, FR
216.119.109.245	AS14992 NewtekOne, Inc.	`1.96ms` from Phoenix, US
4.79.36.165	AS3356 Level 3 Parent, LLC	`0.79ms` from San Diego, US
187.132.216.149	AS8151 UNINET	`13.59ms` from Santiago de Queretaro, MX
115.89.90.5	AS3786 LG DACOM Corporation	`1.94ms` from Seoul, KR
220.74.32.213	AS4766 Korea Telecom	`1.74ms` from Seoul, KR
101.70.75.53	AS4837 CHINA UNICOM China169 Backbone	`16.01ms` from Shanghai, CN
83.6.13.117	AS5617 Orange Polska Spolka Akcyjna	`2.08ms` from Warsaw, PL
79.130.22.213	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`0.52ms` from Athens, GR
181.52.201.165	AS10620 Telmex Colombia S.A.	`18.12ms` from Bogota, CO
82.208.165.149	AS12302 Vodafone Romania S.A.	`1.98ms` from Bucharest, RO

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 81.21.142.80

traceroute to 81.21.142.80 (81.21.142.80): 7 hops max, 52 byte packets

3 [AS37451] 197.157.255.73 57.813 ms

4 [AS37451] 102.129.70.66 1.977 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brazzaville, CG

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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