Autonomous System details

AS203757

Gregor Czubayko · as203757.net

Germany

Stub AS

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AS203757 – Gregor Czubayko

Field	Value
Country	Germany
Website	as203757.net
Hosted domains	0
IPv4 addresses	0
IPv6 addresses	1,208,925,819,614,629,200,000,000
ASN type	ISP
Registry	ripe
Allocated	5 months ago on Nov 14, 2025
Updated	2 months ago on Feb 28, 2026

There are no known IPv4 addresses belonging to this network

Netblock	Company
2a0f:85c1:d9f::/48	Gregor Czubayko

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WHOIS Details

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                                                ASHandle:       AS203757
                                                OrgID:          AS203757
                                                ASName:         AS203757
                                                ASNumber:       AS203757
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There is 1 peer for this ASN.

Peers	Name
AS41108	FirstRoot

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS41108	FirstRoot

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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address	ASN	Details
2a0f:85c1:d9f:0:5054:ff:feb8:b856	AS203757 Gregor Czubayko	`0.69ms` from Duesseldorf, DE

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
77.165.213.157	AS1136 KPN B.V.	`3.10ms` from Amsterdam, NL
105.233.24.45	AS36874 Cybersmart	`16.97ms` from Centurion, ZA
89.39.100.29	AS8926 Moldtelecom SA	`1.43ms` from Chisinau, MD
50.39.222.221	AS20055 Wholesail networks LLC	`1.38ms` from Hillsboro, US
62.228.55.77	AS6866 Cyprus Telecommunications Authority	`2.51ms` from Larnaca, CY
80.150.101.221	AS3320 Deutsche Telekom AG	`1.19ms` from Munich, DE
88.165.59.205	AS12322 Free SAS	`12.81ms` from Paris, FR
92.179.73.253	AS8362 NordNet SA	`7.44ms` from Paris, FR
83.226.248.205	AS8434 Telenor Sverige AB	`0.99ms` from Stockholm, SE
203.151.245.253	AS4618 Internet Thailand Company Limited	`0.80ms` from Bangkok, TH
45.178.53.61	AS269776 GLOBALWEB S.R.L.	`15.41ms` from Buenos Aires, AR
35.131.62.109	AS33588 Charter Communications LLC	`0.92ms` from Denver, US
76.113.116.77	AS7922 Comcast Cable Communications, LLC	`11.68ms` from Denver, US
202.104.196.205	AS4134 CHINANET-BACKBONE	`4.92ms` from Guangzhou, CN
1.217.254.205	AS3786 LG DACOM Corporation	`1.87ms` from Incheon, KR
121.143.230.93	AS4766 Korea Telecom	`0.77ms` from Incheon, KR
102.141.66.253	AS328638 Letaba Networks (Pty) Ltd	`6.05ms` from Johannesburg, ZA
83.47.135.77	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.03ms` from Madrid, ES
15.222.181.189	AS16509 Amazon.com, Inc.	`0.09ms` from Montreal, CA
152.52.230.173	AS9498 BHARTI Airtel Ltd.	`0.70ms` from Mumbai, IN
20.171.49.237	AS8075 Microsoft Corporation	`0.19ms` from Phoenix, US
163.192.174.93	AS11049 Oracle Corporation	`0.33ms` from San Jose, US
18.144.182.93	AS16509 Amazon.com, Inc.	`0.15ms` from San Jose, US
80.65.64.253	AS9146 BIHNET Autonomus System	`0.78ms` from Sarajevo, BA
211.38.120.93	AS4766 Korea Telecom	`6.74ms` from Seoul, KR

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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 AS203757 at robtex.

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