Autonomous System details

AS15721

C.T.CO. Ltd.  ·  ctco.lv

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AS15721 – C.T.CO. Ltd.

Field Value
Country Latvia
Website ctco.lv
Hosted domains 1
IPv4 addresses 2,048
IPv6 addresses 0
ASN type Business
Registry ripe
Allocated 24 years ago on Dec 13, 2001
Updated 2 years ago on Oct 20, 2023
Netblock Company Num of IPs
217.21.168.0/21 C.T.Co Ltd 2,048
217.21.168.0/22 C.T.Co Ltd 1,024
217.21.172.0/22 C.T.Co Ltd 1,024

There are no known IPv6 addresses belonging to this network

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IP Ranges API

WHOIS Details


                                                ASHandle:       AS15721
                                                OrgID:          AS15721
                                                ASName:         AS15721
                                                ASNumber:       AS15721
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There is 1 domain name hosted across 1 IP address on this ASN.

IP Address Domain Domains on this IP
217.21.168.8 ██████████ 1

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Useful for Cybersecurity

Peers

There are 4 peers for this ASN.

Peers Name
AS12578 SIA Tet
AS197870 S.I.A."IBANPAY"
AS28886 RETN Limited
AS9002 RETN Limited
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Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS12578 SIA Tet
AS197870 S.I.A."IBANPAY"
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
217.21.175.169 AS15721 C.T.CO. Ltd. 0.62ms from Riga, LV
217.21.174.248 AS15721 C.T.CO. Ltd. 0.62ms from Riga, LV

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
75.225.191.25 AS6167 Verizon Business 13.96ms from Atlanta, US
77.183.222.169 AS6805 Telefonica Germany GmbH & Co.OHG 2.64ms from Berlin, DE
122.143.53.153 AS4837 CHINA UNICOM China169 Backbone 7.20ms from Changchun, CN
12.221.100.73 AS7018 AT&T Enterprises, LLC 0.93ms from Dallas, US
80.132.69.25 AS3320 Deutsche Telekom AG 8.02ms from Frankfurt am Main, DE
116.6.255.169 AS4809 China Telecom Next Generation Carrier Network 4.70ms from Guangzhou, CN
41.119.4.57 AS12091 MTN SA 7.94ms from Johannesburg, ZA
117.157.8.249 AS9808 China Mobile Communications Group Co., Ltd. 5.15ms from Lanzhou, CN
128.86.23.89 AS786 Jisc Services Limited 0.75ms from London, GB
6.15.75.185 AS668 United States Department of Defense (DoD) 1.76ms from Los Angeles, US
12.17.58.169 AS7018 AT&T Enterprises, LLC 1.56ms from Los Angeles, US
194.224.22.121 AS3352 TELEFONICA DE ESPANA S.A.U. 1.38ms from Madrid, ES
81.44.29.217 AS3352 TELEFONICA DE ESPANA S.A.U. 1.22ms from Madrid, ES
156.236.91.233 AS138965 Streamtech Systems Technologies Inc. 1.18ms from Manila, PH
47.44.89.201 AS20115 Charter Communications LLC 9.07ms from Milwaukee, US
35.237.238.201 AS396982 Google LLC 0.14ms from Moncks Corner, US
78.139.208.121 AS59713 JSC "ER-Telecom Holding" 7.35ms from Moscow, RU
12.1.53.25 AS7018 AT&T Enterprises, LLC 3.78ms from New York City, US
121.87.42.201 AS17511 OPTAGE Inc. 2.43ms from Osaka, JP
178.64.105.89 AS12389 PJSC Rostelecom 17.24ms from Saint Petersburg, RU
189.229.133.105 AS8151 UNINET 4.51ms from Santiago de Queretaro, MX
66.119.197.249 AS16713 Northwest Open Access Network 0.28ms from Seattle, US
63.223.64.201 AS3491 PCCW Global, Inc. 0.20ms from Seattle, US
75.97.107.137 AS3737 PenTeleData Inc. 10.29ms from Secaucus, US
188.24.24.105 AS8708 DIGI ROMANIA S.A. 6.71ms from Timisoara, RO

Traceroute

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

$
traceroute -a -n -q1 -f2 -m7 217.21.170.124
traceroute to 217.21.170.124 (217.21.170.124): 7 hops max, 52 byte packets
2 [AS12578] 80.232.179.174 210.067 ms
3 [AS12578] 195.13.234.82 108.887 ms
4 [AS15721] 217.21.174.248 107.742 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Ashburn, US
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS15721 at robtex.

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