81.17.242.0/24

AS39122 · Blacknight Internet Solutions Limited

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Summary

Country	Ireland
Domain	efence.co.uk
ASN	AS39122
Parent Range	81.17.240.0/20
Registry	RIPE
ID	EFENCE-NET

WHOIS Details

inetnum:        81.17.242.128 - 81.17.242.159
netname:        EFENCE-NET
descr:          Customer assigned /27
descr:          Abuse Contact: [email protected]
country:        IE
admin-c:        BK1905-RIPE
tech-c:         BK1906-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-BLACKNIGHT
created:        2007-01-25T16:18:56Z
last-modified:  2008-04-02T14:10:58Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        BK1905-RIPE
abuse-org:      ORG-BISL2-RIPE

role:           Blacknight RIPE Administrator
address:        Unit 12a, Barrowside Business Park
address:        Sleaty Road
address:        Carlow Town
address:        Ireland
e-mail:         [email protected]
abuse-mailbox:  [email protected]
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:         [email protected]
abuse-mailbox:  [email protected]
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:          81.17.242.0/24
descr:          IE-BLACKNIGHT-INFRA
notify:         [email protected]
origin:         AS39122
mnt-by:         MNT-BLACKNIGHT
created:        2021-05-23T20:02:22Z
last-modified:  2021-05-23T20:02:22Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 81.17.242.0/24

Range	ASN	Company	Num of IPs
81.17.240.0/20	AS39122	Blacknight Internet Solutions Limited	4,096

Nearby Ranges

BGP prefixes that overlap with 81.17.0.0/16

Range	ASN	Company	Num of IPs
81.17.80.0/20	AS28787	Aztelekom LLC	4,096
81.17.208.0/20	AS35833	mpex GmbH	4,096
81.17.240.0/20	AS39122	Blacknight Internet Solutions Limited	4,096
81.17.176.0/20	AS20845	DIGI - INVITEL pool	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	AS21353	JSC ER-Telecom Holding	4,096
81.17.0.0/20	AS24588	JSC ER-Telecom Holding	4,096
81.17.56.0/21	AS205544	Leaseweb UK Limited	2,048
81.17.192.0/21	AS29422	Telia Cygate Oy	2,048
81.17.160.0/21	AS9304	Private Customer	2,048
81.17.168.0/21	AS9304	Private Customer	2,048
81.17.200.0/21	AS15830	Equinix (Finland) Oy	2,048
81.17.224.0/22	AS25467	Akton network Slovenia	1,024
81.17.100.0/22	AS51167	Contabo GmbH	1,024
81.17.96.0/22	AS51167	Contabo GmbH	1,024
81.17.228.0/23	AS25467	Akton d.o.o.	512
81.17.236.0/23	AS25467	Akton network Bosnia and Herzegovina	512
81.17.232.0/23	AS25467	Akton Network Macedonia	512
81.17.234.0/24	AS25467	Akton Podgorica Montenegro	256
81.17.123.0/24	AS207137	Packethub S.A.	256
81.17.122.0/24	AS212238	Packethub S.A.	256
81.17.128.0/24	AS21437	ISP TNS	256
81.17.136.0/24	AS21437	ipv4 assignment for shared hosting platform	256
81.17.140.0/24	AS21500	ipv4 assignment for VPS	256
81.17.159.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.17.121.0/24	AS136787	Packethub S.A.	256
81.17.240.0/24	AS39122	Blacknight Network Infrastructure	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

Hosted domains

There are 893 domain names hosted across 13 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.17.242.77	transportflygplats.com	746
81.17.242.75	shuttledirect.com	720
81.17.242.118	blacknight.com	94
81.17.242.117	belfastconnect.com	56
81.17.242.76	flybus.hu	30
81.17.242.29	bargainprices.co.uk	25
81.17.242.78	hotelcostablanca.com	13
81.17.242.138	teejay.org	4
81.17.242.28	translationresearch.com	3
81.17.242.135	efence.co.uk	1
81.17.242.69	dccc.ie	1
81.17.242.198	nextstepsoftware.ie	1
81.17.242.116	blacknight.com.au	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

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

IP Address	ASN	Details
81.17.242.207	AS39122 Blacknight Internet Solutions Limited	`0.11ms` 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
71.72.76.200	AS10796 Charter Communications Inc	`9.23ms` from Columbus, US
3.14.161.216	AS16509 Amazon.com, Inc.	`0.20ms` from Columbus, US
82.212.215.200	AS29624 Krick Management GmbH trading as iWelt GmbH + Co. KG	`3.09ms` from Frankfurt am Main, DE
98.238.179.24	AS7922 Comcast Cable Communications, LLC	`10.88ms` from Los Angeles, US
13.233.183.40	AS16509 Amazon.com, Inc.	`0.13ms` from Mumbai, IN
118.214.134.88	AS16625 Akamai Technologies, Inc.	`0.24ms` from Mumbai, IN
90.90.245.184	AS3215 Orange S.A.	`1.49ms` from Paris, FR
52.54.181.72	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
177.121.52.184	AS26615 TIM S/A	`9.29ms` from Rio de Janeiro, BR
94.32.59.24	AS30722 Fastweb SpA	`5.75ms` from Rome, IT
116.250.193.120	AS24033 Australian Private Networks Pty Ltd	`9.32ms` from Sydney, AU
138.119.218.184	AS611 NB-PEI Educational Computer Network	`13.50ms` from Beauharnois, CA
141.24.40.24	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`6.02ms` from Frankfurt am Main, DE
175.37.89.168	AS4804 Microplex PTY LTD	`1.99ms` from Melbourne, AU
200.178.124.232	AS4230 CLARO S.A.	`1.25ms` from Osasco, BR
34.232.237.216	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
119.113.102.200	AS4837 CHINA UNICOM China169 Backbone	`8.51ms` from Tieling, CN
198.211.170.200	AS7029 Windstream Communications LLC	`3.01ms` from Atlanta, US
41.39.190.184	AS8452 TE-AS	`7.41ms` from Cairo, EG
14.141.113.56	AS4755 TATA Communications formerly VSNL is Leading ISP	`3.22ms` from Delhi, IN
79.125.72.88	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE
4.69.155.56	AS3356 Level 3 Parent, LLC	`0.64ms` from New York City, US
90.20.236.8	AS3215 Orange S.A.	`18.28ms` from Paris, FR
187.194.223.120	AS8151 UNINET	`1.22ms` from Santiago de Queretaro, MX
36.134.152.72	AS9808 China Mobile Communications Group Co., Ltd.	`0.53ms` from Suzhou, CN

Traceroute

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

traceroute -a -n -q1 81.17.242.118

traceroute to 81.17.242.118 (81.17.242.118): 64 hops max, 52 byte packets

1 [AS39122] 46.22.135.2 0.94 ms

2 [AS39122] 81.17.242.118 0.174 ms

Measurement taken from

IPinfo ProbeNet in Dublin, IE

On January 30th 2026

What are IP address ranges?

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