81.2.128.0/18

AS174 · Cogent Communications, LLC

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Summary

Country	Germany
Domain	cogentco.com
ASN	AS174
Registry	RIPE
ID	US-COGENT-20020315

WHOIS Details

inetnum:        81.2.128.0 - 81.2.191.255
netname:        US-COGENT-20020315
country:        DE
org:            ORG-GATI1-RIPE
geofeed:        https://geofeed.cogentco.com/geofeed.csv
admin-c:        CGNT-RIPE
tech-c:         CGNT-RIPE
status:         ALLOCATED PA
notify:         ripe-e4g9i3hq@cogentco.com
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         COGENT-ROOT-MNT
mnt-lower:      COGENT-HM-MNT
mnt-lower:      COGENT-ROOT-MNT
mnt-routes:     COGENT-ROUTE-MNT
created:        2002-03-15T13:06:36Z
last-modified:  2024-10-25T13:19:53Z
source:         RIPE
abuse-email:    abuse@cogentco.com
abuse-c:        CGNT-RIPE
abuse-org:      ORG-GATI1-RIPE

organisation:   ORG-GATI1-RIPE
org-name:       Cogent Communications Group LLC
country:        US
org-type:       LIR
address:        Lyoner Str. 15
address:        60528
address:        Frankfurt
address:        GERMANY
phone:          +17036577906
fax-no:         +496929989666
fax-no:         +13023402514
e-mail:         ripe-e4g9i3hq@cogentco.com
admin-c:        HK3724-RIPE
admin-c:        GR2753-RIPE
admin-c:        TT4648-RIPE
admin-c:        ED3641-RIPE
admin-c:        GM5562-RIPE
admin-c:        TA4019-RIPE
abuse-c:        CGNT-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        COGENT-ROOT-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         COGENT-ROOT-MNT
created:        2004-04-17T11:07:27Z
last-modified:  2025-10-15T10:22:56Z
source:         RIPE
abuse-email:    abuse@cogentco.com
abuse-c:        CGNT-RIPE
abuse-org:      undefined

role:           Cogent Communications Hostmaster
address:        Cogent Communications, Inc. 2450 N Street NW Washington, DC 20037 USA
phone:          +1 703 657 7906
e-mail:         ipalloc@cogentco.com
abuse-mailbox:  abuse@cogentco.com
admin-c:        GR2753-RIPE
tech-c:         CCRA-RIPE
tech-c:         GR2753-RIPE
tech-c:         TA4019-RIPE
tech-c:         ED3641-RIPE
tech-c:         TT4648-RIPE
tech-c:         GM5562-RIPE
nic-hdl:        CGNT-RIPE
mnt-by:         COGENT-ROOT-MNT
created:        2004-10-28T23:56:17Z
last-modified:  2022-06-23T07:51:38Z
source:         RIPE

route:          81.2.128.0/18
descr:          C.C.D. Cogent Communications Deutschland GmbH
origin:         AS174
mnt-by:         COGENT-ROUTE-MNT
created:        2004-11-01T22:07:45Z
last-modified:  2004-11-12T21:38:28Z
source:         RIPE

Overlapping Ranges

BGP prefixes that are contained by 81.2.128.0/18

Range	ASN	Company	Num of IPs
81.2.130.0/24	AS174	NICTECH P C	256
81.2.149.0/24	AS174	Netspark LTD	256
81.2.128.0/24	AS19970	CarrierDomain Inc	256
81.2.191.0/24	AS200736	MEDIANET INVEST M.I.K.E	256
81.2.148.0/24	AS201042	SD1-Telecom	256
81.2.190.0/24	AS205520	XTB-COGENT	256
81.2.187.0/24	AS208290	WIFISAX GmbH	256
81.2.187.0/24	AS208290	WIFISAX GmbH	256
81.2.187.0/24	AS209784	WIFISAX GmbH	256
81.2.187.0/24	AS209784	WIFISAX GmbH	256
81.2.142.0/23	AS198545	Cogent Communications Group LLC	512
81.2.150.0/23	AS198545	Cogent Communications Group LLC	512
81.2.144.0/22	AS208905	EXELERA TELECOM LTD	1,024
81.2.132.0/22	AS203591	TECNO GENERAL S.R.L	1,024
81.2.176.0/21	AS48945	Independent Fibre Networks	2,048
81.2.152.0/21	AS48945	Independent Fibre Networks	2,048

Nearby Ranges

BGP prefixes that overlap with 81.2.0.0/16

Range	ASN	Company	Num of IPs
81.2.192.0/18	AS24806	INTERNET CZ, a.s.	16,384
81.2.64.0/18	AS20712	Andrews & Arnold Ltd	16,384
81.2.0.0/18	AS12332	PJSC Rostelecom	16,384
81.2.176.0/21	AS48945	Independent Fibre Networks	2,048
81.2.56.0/21	AS12389	Dynamic Broadband Clients. Spassk	2,048
81.2.152.0/21	AS48945	Independent Fibre Networks	2,048
81.2.144.0/22	AS208905	EXELERA TELECOM LTD	1,024
81.2.132.0/22	AS203591	TECNO GENERAL S.R.L	1,024
81.2.142.0/23	AS198545	Cogent Communications Group LLC	512
81.2.150.0/23	AS198545	Cogent Communications Group LLC	512
81.2.187.0/24	AS208290	WIFISAX GmbH	256
81.2.128.0/24	AS19970	CarrierDomain Inc	256
81.2.187.0/24	AS209784	WIFISAX GmbH	256
81.2.187.0/24	AS209784	WIFISAX GmbH	256
81.2.149.0/24	AS174	Netspark LTD	256
81.2.130.0/24	AS174	NICTECH P C	256
81.2.187.0/24	AS208290	WIFISAX GmbH	256
81.2.191.0/24	AS200736	MEDIANET INVEST M.I.K.E	256
81.2.148.0/24	AS201042	SD1-Telecom	256
81.2.190.0/24	AS205520	XTB-COGENT	256

Hosted domains

There are 110 domain names hosted across 56 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.2.137.32	humberstonehouse.co.uk	3
81.2.149.13	app-rimon.co.il	2
81.2.131.110	tf2mail.de	1
81.2.185.72	rohrwasser.cz	1
81.2.131.80	brotundspiele.de	1
81.2.149.9	vogrin.at	1
81.2.129.124	dustandcream.eu	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

6,437 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
81.2.149.107	AS174 Cogent Communications, LLC	`0.71ms` from Amsterdam, NL
81.2.155.46	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.47ms` from London, GB
81.2.176.206	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.30ms` from London, GB
81.2.156.38	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.16ms` from London, GB
81.2.133.66	AS203591 TECNO GENERAL S.R.L	`2.70ms` from Milan, IT
81.2.135.141	AS203591 TECNO GENERAL S.R.L	`1.44ms` from Milan, IT
81.2.170.20	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.59ms` from London, GB
81.2.130.124	AS174 Cogent Communications, LLC	`6.95ms` from Thessaloniki, GR
81.2.160.105	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.17ms` from London, GB
81.2.191.218	AS200736 MEDIANET INVEST AE	`0.81ms` from Thessaloniki, GR
81.2.178.223	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.56ms` from London, GB
81.2.153.153	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.32ms` from London, GB
81.2.175.234	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.40ms` from London, GB
81.2.179.189	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.46ms` from London, GB
81.2.187.254	AS209784 WIFISAX GmbH	`2.45ms` from Amsterdam, NL
81.2.190.168	AS205520 XTB S.A.	`0.51ms` from Frankfurt am Main, DE
81.2.145.29	AS208905 Exelera Telecom Ltd	`1.97ms` from Tel Aviv, IL
81.2.161.216	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.24ms` from London, GB
81.2.154.52	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.64ms` from London, GB
81.2.182.13	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.32ms` from London, GB
81.2.144.6	AS208905 Exelera Telecom Ltd	`1.81ms` from Tel Aviv, IL
81.2.166.168	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.24ms` from London, GB
81.2.163.68	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`2.18ms` from London, GB
81.2.168.228	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.30ms` from London, GB
81.2.180.54	AS48945 OPEN FIBRE NETWORKS (WHOLESALE) LIMITED	`1.01ms` from London, GB

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
13.92.59.130	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
184.18.160.2	AS5650 Frontier Communications of America, Inc.	`4.21ms` from Chicago, US
74.192.122.226	AS19108 Optimum	`11.76ms` from Dallas, US
184.191.51.178	AS22773 Cox Communications Inc.	`11.45ms` from Dallas, US
103.202.222.2	AS9825 Sustainable Development Networking Program	`0.49ms` from Dhaka, BD
189.14.144.162	AS28573 Claro NXT Telecomunicacoes Ltda	`18.17ms` from Fortaleza, BR
157.148.102.2	AS136958 China Unicom Guangdong IP network	`5.11ms` from Guangzhou, CN
91.132.199.2	AS204187 Oy Crea Nova Hosting Solution Ltd	`0.36ms` from Helsinki, FI
169.239.217.194	AS327979 DIAMATRIX C.C	`0.15ms` from Johannesburg, ZA
80.248.188.18	AS35826 Netservers Limited	`0.46ms` from London, GB
156.245.102.226	AS398823 PEG TECH INC	`0.39ms` from Los Angeles, US
94.74.79.162	AS136907 HUAWEI CLOUDS	`3.38ms` from Mexico City, MX
2.44.1.82	AS30722 Vodafone Italia S.p.A.	`3.97ms` from Milan, IT
180.140.173.146	AS4134 CHINANET-BACKBONE	`1.11ms` from Nanning, CN
195.21.136.162	AS3257 GTT Communications Inc.	`0.34ms` from New York City, US
97.106.84.82	AS33363 Charter Communications, Inc	`8.58ms` from Orlando, US
82.122.200.50	AS3215 Orange S.A.	`7.70ms` from Paris, FR
85.87.130.82	AS15704 XTRA TELECOM S.A.	`2.02ms` from Sevilla, ES
67.199.129.194	AS3257 GTT Communications Inc.	`0.25ms` from Singapore, SG
213.227.174.130	AS42473 Anexia Cloud Solutions GmbH	`0.22ms` from Zuerich, CH
102.180.140.2	AS37577 Orange Burkina Faso	`16.80ms` from Accra, GH
83.111.97.98	AS5384 Emirates Internet	`2.95ms` from Al Fujairah City, AE
185.168.169.82	AS48345 Abavia S.r.l.	`0.70ms` from Amsterdam, NL
71.163.92.98	AS701 Verizon Business	`3.31ms` from Ashburn, US
95.105.162.82	AS15962 Orange Slovensko a.s.	`1.50ms` from Bratislava, SK

Traceroute

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

traceroute -a -n -q1 -f4 81.2.171.233

traceroute to 81.2.171.233 (81.2.171.233): 64 hops max, 52 byte packets

4 [] 195.66.238.78 1.258 ms

5 [AS48945] 81.2.171.233 3.079 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On November 22nd 2025

What are IP address ranges?

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