81.17.240.0/20

AS39122 · Blacknight Internet Solutions Limited

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Summary

Country	Ireland
Domain	blacknight.ie
ASN	AS39122
Registry	RIPE
ID	IE-BLACKNIGHT-20051216

WHOIS Details

inetnum:        81.17.240.0 - 81.17.255.255
netname:        IE-BLACKNIGHT-20051216
country:        IE
org:            ORG-BISL2-RIPE
admin-c:        BK1905-RIPE
tech-c:         BK1906-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-BLACKNIGHT
mnt-routes:     MNT-BLACKNIGHT
mnt-domains:    MNT-BLACKNIGHT
remarks:        Geofeed https://geo.blacknight.ie/ripe-geofeed.csv
notify:         ripe-admin@blacknight.ie
created:        2005-12-16T09:17:46Z
last-modified:  2023-07-05T13:10:11Z
source:         RIPE
abuse-email:    abuse@blacknight.ie
abuse-c:        BK1905-RIPE
abuse-org:      ORG-BISL2-RIPE

organisation:   ORG-BISL2-RIPE
org-name:       Blacknight Internet Solutions Limited
country:        IE
org-type:       LIR
address:        Unit 12a, Barrowside Business Park Sleaty Road,Graigcullen
address:        Carlow
address:        Carlow
address:        IRELAND
phone:          +353599183072
fax-no:         +353599164239
e-mail:         ripe@blacknight.ie
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-BLACKNIGHT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-BLACKNIGHT
admin-c:        MN2067-RIPE
admin-c:        PK2608-RIPE
admin-c:        RD5165-RIPE
admin-c:        NH7
abuse-c:        BK1905-RIPE
tech-c:         BK1906-RIPE
created:        2005-12-07T12:56:30Z
last-modified:  2020-12-16T13:34:37Z
source:         RIPE

role:           Blacknight RIPE Administrator
address:        Unit 12a, Barrowside Business Park
address:        Sleaty Road
address:        Carlow Town
address:        Ireland
e-mail:         ripe-admin@blacknight.ie
abuse-mailbox:  abuse@blacknight.ie
admin-c:        MN2067-RIPE
tech-c:         PK2608-RIPE
nic-hdl:        BK1905-RIPE
mnt-by:         MNT-BLACKNIGHT
created:        2007-06-11T11:45:09Z
last-modified:  2013-02-21T09:36:02Z
source:         RIPE

role:           Blacknight RIPE Engineering
address:        Unit 12a, Barrowside Business Park
address:        Sleaty Road
address:        Carlow Town
e-mail:         ripe-engineering@blacknight.ie
abuse-mailbox:  abuse@blacknight.ie
admin-c:        MN2067-RIPE
tech-c:         PK2608-RIPE
nic-hdl:        BK1906-RIPE
mnt-by:         MNT-BLACKNIGHT
created:        2007-06-11T11:50:43Z
last-modified:  2013-02-21T11:15:06Z
source:         RIPE

route:          81.17.240.0/20
descr:          IE-BLACKNIGHT-PA
origin:         AS39122
notify:         ripe-admin@blacknight.ie
mnt-by:         MNT-BLACKNIGHT
created:        2005-12-16T11:02:31Z
last-modified:  2006-03-09T14:44:30Z
source:         RIPE

Overlapping Ranges

BGP prefixes that are contained by 81.17.240.0/20

Range	ASN	Company	Num of IPs
81.17.240.0/24	AS39122	Blacknight Network Infrastructure	256

Nearby Ranges

BGP prefixes that overlap with 81.17.0.0/16

Range	ASN	Company	Num of IPs
81.17.208.0/20	AS35833	mpex GmbH	4,096
81.17.176.0/20	AS20845	DIGI - INVITEL pool	4,096
81.17.0.0/20	AS21353	JSC ER-Telecom Holding	4,096
81.17.16.0/20	AS51852	Private Layer INC	4,096
81.17.64.0/20	AS21470	South West Communications Group Ltd	4,096
81.17.0.0/20	AS24588	JSC ER-Telecom Holding	4,096
81.17.80.0/20	AS28787	Aztelekom LLC	4,096
81.17.200.0/21	AS15830	Equinix (Finland) Oy	2,048
81.17.56.0/21	AS205544	Leaseweb UK Limited	2,048
81.17.168.0/21	AS9304	Private Customer	2,048
81.17.160.0/21	AS398704	Private Customer	2,048
81.17.160.0/21	AS9304	Private Customer	2,048
81.17.192.0/21	AS29422	Telia Cygate Oy	2,048
81.17.168.0/21	AS398704	Private Customer	2,048
81.17.100.0/22	AS51167	Contabo GmbH	1,024
81.17.96.0/22	AS51167	Contabo GmbH	1,024
81.17.224.0/22	AS25467	Akton network Slovenia	1,024
81.17.236.0/23	AS25467	Akton network Bosnia and Herzegovina	512
81.17.228.0/23	AS25467	Akton d.o.o.	512
81.17.232.0/23	AS25467	Akton Network Macedonia	512
81.17.121.0/24	AS136787	Packethub S.A.	256
81.17.240.0/24	AS39122	Blacknight Network Infrastructure	256
81.17.234.0/24	AS25467	Akton Podgorica Montenegro	256
81.17.159.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.17.140.0/24	AS21500	ipv4 assignment for VPS	256
81.17.136.0/24	AS21437	ipv4 assignment for shared hosting platform	256
81.17.128.0/24	AS21437	ISP TNS	256
81.17.141.0/24	AS60918	KHADI core net	256
81.17.120.0/24	AS7979	S.S NETSHOP INTERNET SERVICES LTD	256
81.17.158.0/24	AS8342	Limited Liability Company DZHISIIKS	256
81.17.154.0/24	AS9123	JSC TIMEWEB	256
81.17.122.0/24	AS212238	Packethub S.A.	256
81.17.123.0/24	AS207137	Packethub S.A.	256

Hosted domains

There are 20,108 domain names hosted across 264 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.17.241.117	imklaw.ie	8630
81.17.241.116	yogatrainingmalaga.com	4671
81.17.254.28	myecohub.com	496
81.17.254.65	irbc.ie	356
81.17.255.248	mgsleisure.ie	336
81.17.254.13	chauffeurireland.co	327
81.17.254.14	peamount.ie	302
81.17.255.245	drewmcgannmediation.ie	294
81.17.254.41	splashit.net	271
81.17.254.12	kcorbettdesign.com	261
81.17.255.246	seapointnaturopath.com	252
81.17.255.249	taramedicalsupplies.ie	250
81.17.255.240	tascnet.ie	248
81.17.255.243	cartoonsaloon.ie	247
81.17.254.40	irishmusicsalesonline.com	244
81.17.255.247	webterminalen.com	196
81.17.255.244	merrioncontracting.ie	196
81.17.252.196	clogrennanelime.ie	115
81.17.252.110	belmullet.eu	103
81.17.252.145	anlionra.net	64

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

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

IP Address	ASN	Details
81.17.255.65	AS39122 Blacknight Internet Solutions Limited	`0.17ms` from Dublin, IE
81.17.253.240	AS39122 Blacknight Internet Solutions Limited	`2.33ms` from Dublin, IE
81.17.243.147	AS39122 Blacknight Internet Solutions Limited	`2.62ms` from Dublin, IE
81.17.247.44	AS39122 Blacknight Internet Solutions Limited	`0.41ms` from Dublin, IE
81.17.248.137	AS39122 Blacknight Internet Solutions Limited	`0.23ms` from Dublin, IE
81.17.252.227	AS39122 Blacknight Internet Solutions Limited	`0.18ms` from Dublin, IE
81.17.240.195	AS39122 Blacknight Internet Solutions Limited	`0.11ms` from Dublin, IE
81.17.244.50	AS39122 Blacknight Internet Solutions Limited	`0.20ms` from Dublin, IE
81.17.242.229	AS39122 Blacknight Internet Solutions Limited	`0.10ms` from Dublin, IE
81.17.254.198	AS39122 Blacknight Internet Solutions Limited	`0.16ms` from Dublin, IE
81.17.241.199	AS39122 Blacknight Internet Solutions Limited	`0.55ms` from Dublin, IE
81.17.249.249	AS39122 Blacknight Internet Solutions Limited	`0.27ms` from Dublin, IE
81.17.246.124	AS39122 Blacknight Internet Solutions Limited	`0.10ms` from Dublin, IE

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
149.210.165.84	AS20857 Signet B.V.	`0.60ms` from Amsterdam, NL
50.31.147.20	AS23352 DEFT.COM	`0.30ms` from Chicago, US
23.167.232.196	AS62553 Elcro Digital Services, LLC	`0.18ms` from Dallas, US
84.171.145.148	AS3320 Deutsche Telekom AG	`3.55ms` from Duesseldorf, DE
12.201.81.4	AS7018 AT&T Enterprises, LLC	`0.99ms` from Los Angeles, US
90.38.235.100	AS3215 Orange S.A.	`6.27ms` from Marseille, FR
179.26.17.116	AS6057 Administracion Nacional de Telecomunicaciones	`1.88ms` from Montevideo, UY
92.223.6.132	AS210756 EdgeCenter LLC	`0.23ms` from Moscow, RU
13.217.136.132	AS14618 Amazon.com, Inc.	`0.53ms` from Reston, US
107.191.197.148	AS13534 Ralls Technologies, LLC	`3.07ms` from St. Louis, US
209.192.152.100	AS7979 Servers.com, Inc.	`0.15ms` from Ashburn, US
130.109.228.196	AS668 United States Department of Defense (DoD)	`0.63ms` from Atlanta, US
45.17.161.20	AS7018 AT&T Enterprises, LLC	`1.39ms` from Atlanta, US
46.142.125.20	AS8881 1&1 Versatel GmbH	`5.96ms` from Berlin, DE
44.236.101.212	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
223.156.28.116	AS4134 CHINANET-BACKBONE	`5.86ms` from Changsha, CN
83.251.6.68	AS1257 Tele2 Sverige AB	`2.40ms` from Copenhagen, DK
24.155.190.164	AS7459 Grande Communications Networks, LLC	`1.38ms` from Dallas, US
177.47.88.116	AS263294 NOVELTY TELECOM LTDA	`7.78ms` from Fortaleza, BR
134.96.162.196	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`10.19ms` from Frankfurt am Main, DE
47.83.161.212	AS45102 Alibaba (US) Technology Co., Ltd.	`0.75ms` from Hong Kong, HK
58.176.28.36	AS9269 Hong Kong Broadband Network Ltd.	`1.16ms` from Hong Kong, HK
103.137.189.4	AS9341 PT INDONESIA COMNETS PLUS	`1.76ms` from Jakarta, ID
134.151.28.20	AS786 Jisc Services Limited	`6.62ms` from London, GB
151.33.225.164	AS1267 WIND TRE S.P.A.	`3.73ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -m5 81.17.245.60

traceroute to 81.17.245.60 (81.17.245.60): 5 hops max, 52 byte packets

1 [AS15169] 74.125.251.165 33.138 ms

2 [AS15169] 192.178.107.104 33.224 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On February 7th 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.

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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