Autonomous System details

AS50300

CustodianDC Limited · custodiandc.com

United Kingdom

BitTorrent

Crawler

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AS50300 – CustodianDC Limited

Field	Value
Country	United Kingdom
Website	custodiandc.com
Hosted domains	2,961
IPv4 addresses	11,264
IPv6 addresses	426,750,814,323,964,098,671,280,128
ASN type	Hosting
Registry	ripe
Allocated	16 years ago on Dec 16, 2009
Updated	5 months ago on Sep 01, 2025

Netblock	Company	Num of IPs
185.14.164.0/22	Clear Picture Services Limited	1,024
5.102.168.0/24	CustodianDC Limited	256
5.102.169.0/24	Akita Systems	256
5.102.170.0/24	CustodianDC Limited	256
5.102.171.0/24	CustodianDC Limited	256
5.102.172.0/24	RediNet	256
5.102.173.0/24	CDC-ID 1814	256
5.102.174.0/24	Infotech Solutions (UK) Ltd	256
5.102.175.0/24	CustodianDC Limited	256
92.118.16.0/24	Swiftping Ltd LOW.MS London	256
109.74.240.0/24	Hosting and Managed Services	256
109.74.241.0/24	CustodianDC Limited	256
109.74.242.0/24	Akita Systems	256
109.74.243.0/24	Footwork Solutions	256
109.74.244.0/24	Akita Systems	256
109.74.246.0/24	Virtual Tin Ltd	256
109.74.247.0/24	Systems Analysis Design and Support Ltd	256
109.74.248.0/24	Vitanium Systems Ltd	256
109.74.249.0/24	AKJ	256
109.74.250.0/24	Virtual Tin	256
109.74.251.0/24	CustodianDC Limited	256
109.74.252.0/24	Vitanium Systems Ltd	256
109.74.254.0/24	CustodianDC Limited	256
109.74.255.0/24	Custodian LTD.	256
176.12.104.0/24	CustodianDC Limited	256
176.12.105.0/24	Genco Holding Inc.	256
176.12.106.0/24	KM Group	256
176.12.107.0/24	Icomera	256
176.12.108.0/24	CDC-ID 1814	256
176.12.109.0/24	CustodianDC Limited	256
176.12.110.0/24	Custodian LTD.	256
185.32.72.0/24	CustodianDC Limited	256
185.32.73.0/24	CustodianDC Limited	256
185.32.75.0/24	CustodianDC Limited	256
185.42.65.0/24	UK-UMBEE-Block-2	256
185.48.164.0/24	CustodianDC Limited	256
185.48.165.0/24	CustodianDC Limited	256
185.48.166.0/24	CustodianDC Limited	256
185.48.167.0/24	CustodianDC Limited	256
185.104.136.0/24	Icomera AB	256
193.33.198.0/24	VirtualTin Limited	256

Netblock	Company
2a00:1c10:100::/40	CustodianDC Limited
2a00:1c10::/44	Custodian DataCentre
2a00:1c10:10::/44	Custodian LTD.
2a00:1c10:30::/44	CustodianDC Limited
2a00:1c10:40::/44	Byfleet and Gatwick Core and Colocation Clients
2a00:1c10:cd0::/44	Custodian LTD.
2a00:1c10:fff0::/44	Custodian LTD.
2a00:1c10:da2::/48	CustodianDC Limited

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WHOIS Details

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                                                ASHandle:       AS50300
                                                OrgID:          AS50300
                                                ASName:         AS50300
                                                ASNumber:       AS50300
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 2,961 domain names hosted across 251 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
109.74.241.76	██████████	562
185.48.165.84	██████████	530
185.48.165.85	██████████	513
185.48.165.89	██████████	493
109.74.246.24	██████████	210
176.12.106.4	██████████	162
185.32.72.132	██████████	131
185.32.73.139	██████████	112
109.74.246.18	██████████	83
109.74.248.16	██████████	74

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Hosted Domains API & Database

Peers

There are 1,144 peers for this ASN.

Peers	Name
AS10099	China Unicom Global
AS1031	PEER 1031 LLC
AS10310	Yahoo Holdings Inc.
AS1101	IP-EEND BV
AS11019	HAProxy Technologies, Inc.
AS1103	SURF B.V.
AS11179	Aryaka Networks, Inc.
AS112	DNS-OARC
AS1126	Vancis Advanced ICT Services
AS11260	EastLink
AS1140	Stichting Internet Domeinregistratie Nederland
AS11967	Hop179 LLC
AS1200	Amsterdam Internet Exchange B.V.
AS12189	PhoenixNAP LLC
AS12200	Rackspace Hosting
AS12329	GLASFASER RUHR GmbH & Co. KG
AS12355	HeLi NET Telekommunikation GmbH & Co.
AS12390	KCOM Group Limited
AS12399	q.beyond AG
AS12400	Partner Communications Ltd.
AS1241	Forthnet
AS12414	Solcon Internetdiensten B.V.
AS12440	Hughes Network Systems GmbH
AS1248	HERE Global BV
AS12491	Gilat Telecom Ltd.
AS12496	IDNet
AS12519	FastNet International Ltd
AS12552	GlobalConnect AB
AS12578	SIA Tet
AS12654	Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS1267	WIND TRE S.P.A.
AS12693	e.discom Telekommunikation GmbH
AS12695	LLC Digital Network
AS12703	Pulsant (Scotland) Ltd
AS12713	OTEGlobe
AS12731	IPHH Internet Port Hamburg GmbH
AS12741	Netia SA
AS12759	Stephan Fuss trading as SoftCom Datensysteme
AS12775	JPC Infonet Ltd
AS12779	IT.Gate S.p.A.
AS12859	BIT BV
AS12874	Fastweb SpA
AS12876	SCALEWAY S.A.S.
AS12888	Amadeus GmbH
AS12897	ENTEGA Medianet GmbH
AS12902	Luna.nl B.V.
AS12969	Vodafone Iceland
AS12993	Sabiedriba ar ierobezotu atbildibu DELSKA Latvia
AS13000	Leon Sp. z o.o.
AS13002	ISIX Communications LLP
AS13009	Redcentric Solutions Ltd
AS13030	Init7 (Switzerland) Ltd.
AS13037	Zen Internet Ltd
AS13101	TNG Stadtnetz GmbH
AS13122	Manx Telecom Trading Ltd
AS13150	CATO NETWORKS LTD
AS13194	Bite IP Network
AS131958	Tama Cable Network Co.,Ltd.
AS13208	Newtel Limited
AS13213	UK-2 Limited
AS132337	Axclusive
AS13237	euNetworks GmbH
AS13249	PRIVATE JOINT STOCK COMPANY "DATAGROUP"
AS13285	TalkTalk Communications Limited
AS132876	Symphony Communication (Thailand) PCL.
AS13289	Krick Management GmbH trading as iWelt GmbH + Co. KG
AS13335	Cloudflare, Inc.
AS13360	Triton Digital
AS133613	MTel telecommunication company ltd.
AS13414	Twitter Inc.
AS135391	AOFEI DATA INTERNATIONAL COMPANY LIMITED
AS136106	PT. Mega Akses Persada
AS13631	CITADEL ENTERPRISE AMERICAS LLC
AS136907	HUAWEI CLOUDS
AS137182	BLUE WIRELESS PTE LTD
AS137367	PT iForte Solusi Infotek
AS137409	GSL Networks Pty LTD
AS138322	Afghan Wireless Communication Company
AS138915	Kaopu Cloud HK Limited
AS13896	8x8, Inc.
AS139341	ACE
AS139628	Mega Truenet Communication Co., Ltd.
AS13984	SD Data Center
AS139901	Apple Communication Ltd.
AS14061	DigitalOcean, LLC
AS14127	Iland Internet Solutions Corporation
AS14340	Salesforce.com, Inc.
AS14537	Continent 8 LLC
AS14593	Space Exploration Technologies Corporation
AS14630	Invesco Group Services, Inc.
AS14840	BR.Digital Telecom
AS14907	Wikimedia Foundation Inc.
AS150329	Sensor Dynamics Pty Ltd
AS15389	P/F Telefonverkid
AS15435	DELTA Fiber Nederland B.V.
AS15447	CM.com N.V.
AS1547	INTERDNESTRKOM, Sovmestnoe Zakrytoe Aktsionernoe Obshchestvo
AS15510	Compuweb Communications Services Limited
AS15547	netplus.ch SA
AS15557	Societe Francaise Du Radiotelephone - SFR SA

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ASN API & Database

Upstreams

There are 6 upstreams for this ASN.

upstreams	Name
AS174	Cogent Communications, LLC
AS2914	NTT America, Inc.
AS3223	Voxility LLP
AS3257	GTT Communications Inc.
AS3356	Level 3 Parent, LLC
AS6939	Hurricane Electric LLC

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ASN API & Database

Downstreams

There are 10 downstreams for this ASN.

Downstreams	Name
AS174	Cogent Communications, LLC
AS2914	NTT America, Inc.
AS31463	Redcentric Solutions Ltd
AS3257	GTT Communications Inc.
AS3356	Level 3 Parent, LLC
AS39103	Moat Homes Limited
AS43408	Orange Cyberdefense UK Limited
AS48407	TigrisNet
AS51926	PageOne Communications Ltd
AS6939	Hurricane Electric LLC

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
109.74.251.36	AS50300 CustodianDC Limited	`1.14ms` from London, GB
5.102.174.44	AS50300 CustodianDC Limited	`1.15ms` from London, GB
109.74.248.45	AS50300 CustodianDC Limited	`1.05ms` from London, GB
109.74.250.17	AS50300 CustodianDC Limited	`1.05ms` from London, GB
5.102.175.46	AS50300 CustodianDC Limited	`1.01ms` from London, GB
185.14.167.74	AS50300 CustodianDC Limited	`1.00ms` from London, GB
176.12.110.20	AS50300 CustodianDC Limited	`0.84ms` from London, GB
185.14.165.126	AS50300 CustodianDC Limited	`0.99ms` from London, GB
109.74.252.5	AS50300 CustodianDC Limited	`2.83ms` from London, GB
5.102.173.117	AS50300 CustodianDC Limited	`1.04ms` from London, GB
176.12.108.33	AS50300 CustodianDC Limited	`1.33ms` from London, GB
5.102.172.134	AS50300 CustodianDC Limited	`1.04ms` from London, GB
5.102.169.108	AS50300 CustodianDC Limited	`1.02ms` from London, GB
2a00:1c10:10:399::20	AS50300 CustodianDC Limited	`0.94ms` from London, GB
185.32.75.65	AS50300 CustodianDC Limited	`1.00ms` from London, GB
176.12.106.36	AS50300 CustodianDC Limited	`1.00ms` from London, GB
109.74.241.109	AS50300 CustodianDC Limited	`1.06ms` from London, GB
176.12.109.255	AS50300 CustodianDC Limited	`0.71ms` from London, GB
2a00:1c10:ffff:1::996:1	AS50300 CustodianDC Limited	`0.89ms` from London, GB
193.33.198.112	AS50300 CustodianDC Limited	`1.42ms` from London, GB
176.12.107.84	AS50300 CustodianDC Limited	`1.06ms` from London, GB
2a00:1c10:cdc:497::153	AS50300 CustodianDC Limited	`0.93ms` from London, GB
109.74.246.23	AS50300 CustodianDC Limited	`1.02ms` from London, GB
92.118.16.105	AS50300 CustodianDC Limited	`0.69ms` from London, GB
185.32.72.124	AS50300 CustodianDC Limited	`1.03ms` 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
77.170.170.28	AS1136 KPN B.V.	`3.71ms` from Amsterdam, NL
34.218.70.188	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
130.131.27.92	AS8075 Microsoft Corporation	`0.41ms` from Chicago, US
108.204.162.156	AS7018 AT&T Enterprises, LLC	`6.40ms` from Dallas, US
178.27.63.252	AS3209 Vodafone GmbH	`7.19ms` from Frankfurt am Main, DE
43.251.79.252	AS208525 Airu Limited	`1.35ms` from Incheon, KR
89.141.107.108	AS12430 VODAFONE ESPANA S.A.U.	`8.21ms` from Madrid, ES
88.0.98.204	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.83ms` from Madrid, ES
167.116.50.252	AS6057 Administracion Nacional de Telecomunicaciones	`1.58ms` from Montevideo, UY
195.91.192.252	AS31363 JSC ER-Telecom Holding	`1.00ms` from Moscow, RU
68.133.12.252	AS701 Verizon Business	`9.35ms` from New York City, US
126.26.66.252	AS17676 SoftBank Corp.	`3.42ms` from Osaka, JP
34.228.245.28	AS14618 Amazon.com, Inc.	`0.62ms` from Reston, US
88.81.144.12	AS8680 Sure (Guernsey) Limited	`1.03ms` from Saint Peter Port, GG
52.120.159.44	AS8075 Microsoft Corporation	`0.82ms` from Sydney, AU
199.47.250.124	AS16803 Myakka Communications, Inc.	`3.91ms` from Tampa, US
113.234.154.44	AS4837 CHINA UNICOM China169 Backbone	`7.84ms` from Tieling, CN
78.58.142.12	AS8764 Telia Lietuva, AB	`1.10ms` from Vilnius, LT
208.191.85.236	AS7018 AT&T Enterprises, LLC	`1.45ms` from Atlanta, US
8.147.112.108	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.70ms` from Beijing, CN
18.64.101.252	AS16509 Amazon.com, Inc.	`0.23ms` from Berlin, DE
34.78.168.140	AS396982 Google LLC	`0.15ms` from Brussels, BE
50.45.40.140	AS5650 Frontier Communications of America, Inc.	`10.99ms` from Chicago, US
128.2.21.204	AS9 Carnegie Mellon University	`5.66ms` from Cleveland, US
217.229.143.76	AS3320 Deutsche Telekom AG	`3.42ms` from Duesseldorf, DE

Traceroute

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

traceroute -a -n -q1 -f5 -m9 185.42.65.123

traceroute to 185.42.65.123 (185.42.65.123): 9 hops max, 52 byte packets

5 [AS8447] 195.3.64.165 6.561 ms

6 [AS8447] 195.3.64.190 8.556 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Ljubljana, SI

On January 19th 2026

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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 AS50300 at robtex.

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