81.173.104.0/21

AS12956 · TELXIUS Cable

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Summary

Country	Spain
Domain	telefonica.com
ASN	AS12956
Registry	RIPE
ID	ES-TDATACORP-20030219

WHOIS Details

inetnum:        81.173.104.0 - 81.173.111.255
netname:        ES-TDATACORP-20030219
country:        ES
org:            ORG-TDC1-RIPE
admin-c:        TG171-RIPE
tech-c:         TG171-RIPE
status:         ALLOCATED PA
notify:         ip_coord.tiws@telefonica.com
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TDATANET-LIR
mnt-lower:      TDATANET-LIR
mnt-routes:     TDATANET-LIR
created:        2016-12-23T12:42:52Z
last-modified:  2021-09-21T08:41:57Z
source:         RIPE
abuse-email:    abuse.businesssolutions@telefonica.com
abuse-c:        TG171-RIPE
abuse-org:      ORG-TDC1-RIPE

organisation:   ORG-TDC1-RIPE
org-name:       TELEFONICA GLOBAL SOLUTIONS SL
country:        ES
org-type:       LIR
address:        Cl Ronda de la Comunicacion s/n, Edificio Oeste 3, Planta 2
address:        28050
address:        Madrid
address:        SPAIN
phone:          +34914830527
e-mail:         ip_coord.globalsolutions@telefonica.com
admin-c:        TG171-RIPE
abuse-c:        TG171-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        TDATANET-LIR
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TDATANET-LIR
created:        2004-04-17T11:18:19Z
last-modified:  2025-08-01T10:48:32Z
source:         RIPE
abuse-email:    abuse.businesssolutions@telefonica.com
abuse-c:        TG171-RIPE
abuse-org:      undefined

role:           TDATANET GROUP
address:        Distrito Telefónica
address:        Ronda de la comunicacion s/n,
address:        Edificio Oeste 3 - Planta 2
e-mail:         ip_coord.globalsolutions@telefonica.com
remarks:        For security related problems contact:
remarks:        security.businesssolutions@telefonica.com
remarks:        For problems relating electronic mail abuse contact:
remarks:        abuse.businesssolutions@telefonica.com
admin-c:        MOB6-RIPE
admin-c:        RJ4848-RIPE
admin-c:        NC5222-RIPE
admin-c:        HGT12-RIPE
tech-c:         MOB6-RIPE
tech-c:         RJ4848-RIPE
tech-c:         NC5222-RIPE
tech-c:         HGT12-RIPE
tech-c:         HNM15-RIPE
nic-hdl:        TG171-RIPE
mnt-by:         TDATANET-LIR
created:        2001-11-27T17:09:07Z
last-modified:  2021-08-16T11:57:52Z
source:         RIPE
abuse-mailbox:  abuse.businesssolutions@telefonica.com

route:          81.173.104.0/21
origin:         as12956
mnt-by:         TDATANET-LIR
created:        2019-10-11T10:53:49Z
last-modified:  2019-10-11T10:53:49Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.173.0.0/16

Range	ASN	Company	Num of IPs
81.173.128.0/17	AS8422	NetCologne Gesellschaft fur Telekommunikation mbH	32,768
81.173.0.0/22	AS50522	Sewan Nederland B.V.	1,024
81.173.32.0/22	AS50522	Sewan Nederland B.V.	1,024
81.173.36.0/22	AS200583	TINEXTA INFOCERT S.p.A	1,024
81.173.96.0/22	AS50522	Sewan Nederland B.V.	1,024
81.173.100.0/22	AS51580	TIMENET SPA	1,024
81.173.44.0/22	AS51942	EK-Media B.V.	1,024
81.173.12.0/22	AS56410	Leeson Telecom Holdings Ltd	1,024
81.173.112.0/22	AS8560	IONOS SE	1,024
81.173.84.0/22	AS47692	METANET AG	1,024
81.173.6.0/24	AS12329	GLASFASER RUHR GmbH & Co. KG	256
81.173.23.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.28.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.7.0/24	AS50522	Sewan Nederland B.V.	256
81.173.22.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.41.0/24	AS198731	Prisco Electronica GPON Customers	256
81.173.11.0/24	AS199391	One System Integration LTD	256
81.173.47.0/24	AS207176	EK-Media B.V.	256
81.173.80.0/24	AS211864	Nessus GmbH	256
81.173.124.0/24	AS24730	Garnier Projects BV	256
81.173.4.0/24	AS24730	Garnier Projects BV	256
81.173.18.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.19.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.20.0/24	AS4134	China Telecom (Europe) Ltd.	256
81.173.21.0/24	AS4134	China Telecom (Europe) Ltd.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
81.173.104.64	AS12956 TELXIUS Cable	`0.30ms` from Madrid, ES
81.173.111.244	AS12956 TELXIUS Cable	`0.56ms` from London, GB
81.173.107.37	AS12956 TELXIUS Cable	`0.21ms` from Madrid, ES
81.173.108.128	AS12956 TELXIUS Cable	`0.34ms` from Madrid, ES
81.173.105.204	AS12956 TELXIUS Cable	`0.48ms` from London, GB
81.173.106.230	AS12956 TELXIUS Cable	`0.20ms` from Saint-Denis, FR
81.173.109.171	AS12956 TELXIUS Cable	`0.86ms` from London, GB
81.173.110.167	AS12956 TELXIUS Cable	`0.23ms` from Saint-Denis, FR

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
34.79.102.69	AS396982 Google LLC	`0.14ms` from Brussels, BE
97.139.36.197	AS6167 Verizon Business	`17.53ms` from Dallas, US
92.140.234.53	AS3215 Orange S.A.	`5.12ms` from Frankfurt am Main, DE
105.169.139.21	AS37119 UNITEL SA	`0.74ms` from Luanda, AO
75.73.91.245	AS7922 Comcast Cable Communications, LLC	`8.99ms` from Minneapolis, US
80.135.133.181	AS3320 Deutsche Telekom AG	`1.92ms` from Nuernberg, DE
187.20.34.53	AS28573 Claro NXT Telecomunicacoes Ltda	`10.63ms` from Rio de Janeiro, BR
164.77.74.229	AS27651 ENTEL CHILE S.A.	`1.12ms` from Santiago, CL
189.137.182.21	AS8151 UNINET	`3.74ms` from Santiago de Queretaro, MX
119.69.227.69	AS17858 LG POWERCOMM	`5.04ms` from Seoul, KR
14.88.2.165	AS4766 Korea Telecom	`1.68ms` from Seoul, KR
43.128.117.21	AS132203 Tencent Building, Kejizhongyi Avenue	`0.67ms` from Singapore, SG
27.33.161.133	AS7545 TPG Telecom Limited	`1.18ms` from Sydney, AU
157.147.164.181	AS2527 Sony Network Communications Inc.	`2.07ms` from Tokyo, JP
18.234.131.21	AS14618 Amazon.com, Inc.	`0.45ms` from Ashburn, US
76.97.130.181	AS7922 Comcast Cable Communications, LLC	`5.31ms` from Atlanta, US
98.252.182.37	AS7922 Comcast Cable Communications, LLC	`4.18ms` from Atlanta, US
111.165.17.101	AS4837 CHINA UNICOM China169 Backbone	`4.71ms` from Beijing, CN
34.79.24.37	AS396982 Google LLC	`0.16ms` from Brussels, BE
177.5.249.213	AS8167 V tal	`12.18ms` from Curitiba, BR
93.219.21.21	AS3320 Deutsche Telekom AG	`4.38ms` from Duesseldorf, DE
47.165.219.213	AS5650 Frontier Communications of America, Inc.	`4.25ms` from Secaucus, US
85.217.250.197	AS39401 Link+ Ltd	`4.86ms` from Sofia, BG
13.73.198.245	AS8075 Microsoft Corporation	`0.69ms` from Sydney, AU
111.81.232.85	AS17421 Mobile Business Group	`16.19ms` from Taichung, TW

Traceroute

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

traceroute -a -n -q1 -f4 81.173.110.2

traceroute to 81.173.110.2 (81.173.110.2): 64 hops max, 52 byte packets

4 [AS3257] 154.14.157.230 28.849 ms

5 [AS12956] 81.173.110.2 6.226 ms

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On March 13th 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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