Autonomous System details

AS19577

CASTRO TELECOM LLC  ·  ulisboa.pt

United States
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AS19577 – CASTRO TELECOM LLC

Field Value
Country United States
Website ulisboa.pt
Hosted domains 20
IPv4 addresses 1,280
IPv6 addresses 79,228,162,514,264,337,593,543,950,336
ASN type Business
Registry arin
Allocated 2 years ago on Jun 14, 2024
Updated a year ago on Feb 26, 2025

IP Ranges

Netblock Company Num of IPs
208.85.8.0/22 CASTRO TELECOM LLC 1,024
23.147.168.0/24 CASTRO TELECOM LLC 256
Netblock Company
2602:faa5::/32 CASTRO TELECOM LLC
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WHOIS Details

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                                                ASHandle:       AS19577
                                                OrgID:          AS19577
                                                ASName:         AS19577
                                                ASNumber:       AS19577
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 20 domain names hosted across 5 IP addresses on this ASN.

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IP Address Domain Domains on this IP
23.147.168.185 ██████████ 10
23.147.168.130 ██████████ 5
23.147.168.3 ██████████ 3
23.147.168.182 ██████████ 1
23.147.168.200 ██████████ 1

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Peers

There is 1 peer for this ASN.

Peers Name
AS200454 Tomas Oliveira Valente Leite de Castro
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS200454 Tomas Oliveira Valente Leite de Castro
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
23.147.168.62 AS19577 CASTRO TELECOM LLC 0.21ms from Kansas City, US
2602:faa5:b05::1 AS19577 CASTRO TELECOM LLC 0.59ms from Kansas City, US
2602:faa5:: AS19577 CASTRO TELECOM LLC 0.38ms from Kansas City, US
208.85.11.1 AS19577 CASTRO TELECOM LLC 0.20ms from Kansas City, US

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
154.16.116.41 AS14670 WHG Hosting Services Ltd 0.21ms from Buffalo, US
117.202.66.137 AS9829 National Internet Backbone 9.77ms from Chennai, IN
18.117.163.249 AS16509 Amazon.com, Inc. 0.67ms from Columbus, US
108.205.138.41 AS7018 AT&T Enterprises, LLC 17.36ms from Dallas, US
86.166.156.89 AS2856 British Telecommunications PLC 4.02ms from Erith, GB
113.23.65.201 AS18403 FPT Telecom Company 9.58ms from Hanoi, VN
42.101.67.217 AS4134 CHINANET-BACKBONE 9.45ms from Harbin, CN
39.113.10.25 AS9318 SK Broadband Co Ltd 7.01ms from Incheon, KR
68.103.33.233 AS22773 Cox Communications Inc. 9.08ms from Kansas City, US
209.203.107.233 AS3549 Level 3 Parent, LLC 2.03ms from Los Angeles, US
188.85.9.105 AS12430 VODAFONE ESPANA S.A.U. 7.92ms from Madrid, ES
151.30.54.57 AS1267 WIND TRE S.P.A. 2.60ms from Milan, IT
151.3.52.41 AS1267 WIND TRE S.P.A. 3.85ms from Milan, IT
94.74.6.73 AS39636 IREN ENERGIA S.P.A 2.16ms from Milan, IT
167.20.14.201 AS21928 T-Mobile USA, Inc. 16.95ms from New York City, US
112.69.232.9 AS17511 OPTAGE Inc. 1.71ms from Osaka, JP
98.81.54.169 AS14618 Amazon.com, Inc. 0.19ms from Reston, US
181.163.121.137 AS7418 TELEFÓNICA CHILE S.A. 9.21ms from Santiago, CL
219.90.4.9 AS703 Verizon Business 0.73ms from Taipei, TW
42.227.155.153 AS4837 CHINA UNICOM China169 Backbone 6.21ms from Zhengzhou, CN
45.90.64.233 AS206551 Thomas Butter 10.66ms from Zuerich, CH
213.126.19.169 AS33915 Vodafone Libertel B.V. 0.53ms from Amsterdam, NL
107.241.169.25 AS20057 AT&T Enterprises, LLC 2.06ms from Ashburn, US
73.200.60.249 AS7922 Comcast Cable Communications, LLC 11.39ms from Ashburn, US
34.140.35.233 AS396982 Google LLC 0.15ms from Brussels, BE

Traceroute

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

$
traceroute -a -n -q1 -f2 208.85.11.1
traceroute to 208.85.11.1 (208.85.11.1): 64 hops max, 52 byte packets
2 [AS917] 170.39.225.2 13.571 ms
3 *
5 *
6 *
8 [AS12186] 192.189.65.1 1.584 ms
9 [AS19577] 208.85.11.1 0.282 ms
Measurement taken from IPinfo ProbeNet in Kansas City, 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 AS19577 at robtex.

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