Autonomous System details

AS51859

Mainstream doo Beograd  ·  mainstream.eu

Serbia

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AS51859 – Mainstream doo Beograd

Field Value
Country Serbia
Website mainstream.eu
Hosted domains 929
IPv4 addresses 9,984
IPv6 addresses 673,439,381,371,246,869,545,123,577,856
ASN type Hosting
Registry ripe
Allocated 15 years ago on Nov 17, 2010
Updated 2 months ago on Oct 21, 2025

IP Ranges

Netblock Company Num of IPs
87.237.200.0/21 Mainstream doo Beograd 2,048
91.214.200.0/22 Mainstream doo Beograd 1,024
91.222.4.0/22 Virtual infrastructure 1,024
92.249.52.0/22 Mainstream doo Beograd 1,024
185.29.100.0/22 Virtual infrastructure 1,024
185.167.144.0/22 Mainstream Cloud 1,024
188.93.120.0/22 Mainstream doo Beograd 1,024
91.185.218.0/23 Enterprise Cloud 512
87.237.201.0/24 Virtual Infrastructure 256
87.237.202.0/24 Virtual Infrastructure 256
87.237.203.0/24 Virtual Infrastructure 256
87.237.204.0/24 Virtual Infrastructure 256
87.237.205.0/24 Mainstream Enterprise Cloud 256
87.237.206.0/24 Virtual infrastructure 256
87.237.207.0/24 Virtual infrastructure 256
91.185.199.0/24 Enterprise Cloud 256
91.185.223.0/24 Enterprise Cloud 256
91.222.4.0/24 Virtual infrastructure 256
91.222.5.0/24 Virtual infrastructure 256
91.222.6.0/24 Virtual infrastructure 256
91.222.7.0/24 Virtual infrastructure 256
92.249.53.0/24 Virtual infrastructure 256
185.29.100.0/24 Virtual infrastructure 256
185.29.101.0/24 Virtual infrastructure 256
185.29.102.0/24 Virtual infrastructure 256
185.29.103.0/24 Virtual infrastructure 256
185.167.146.0/24 Mainstream doo Beograd 256
185.167.147.0/24 Mainstream doo Beograd 256
185.168.19.0/24 Kancelarija za informacione tehnologije i elektronsku upravu 256
188.93.120.0/24 Virtual Infrastructure 256
188.93.121.0/24 Virtual Infrastructure 256
188.93.122.0/24 Virtual infrastructure 256
188.93.123.0/24 Virtual infrastructure 256
212.72.214.0/24 Vivacom Bulgaria EAD 256
213.91.181.0/24 Vivacom Bulgaria EAD 256

Netblock Company
2a04:2e40::/29 Mainstream doo Beograd
2a04:2e40::/34 Mainstream doo Beograd
2a04:2e40:4000::/34 Mainstream doo Beograd
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WHOIS Details

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                                                ASHandle:       AS51859
                                                OrgID:          AS51859
                                                ASName:         AS51859
                                                ASNumber:       AS51859
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 929 domain names hosted across 245 IP addresses on this ASN.

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IP Address Domain Domains on this IP
87.237.203.194 ██████████ 310
87.237.200.6 ██████████ 61
188.93.122.55 ██████████ 39
185.29.102.100 █████████ 18
185.29.100.194 ██████████ 17
91.222.6.103 █████████ 17
185.29.102.14 ██████████ 15
185.29.102.213 ██████ 12
185.29.102.75 ██████████ 10
185.29.102.216 ██████████ 10

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Peers

There are 7 peers for this ASN.

Peers Name
AS13004 Serbian Open Exchange DOO
AS15958 CETINdoo-NET
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS3212 Telemach Slovenija d.o.o.
AS8400 TELEKOM SRBIJA a.d.
AS8866 Vivacom Bulgaria EAD
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ASN API & Database

Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS15958 CETINdoo-NET
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS3212 Telemach Slovenija d.o.o.
AS8400 TELEKOM SRBIJA a.d.
AS8866 Vivacom Bulgaria EAD
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
2a04:2e40:300::eeee:1 AS51859 Mainstream doo Beograd 0.89ms from Belgrade, RS
87.237.203.75 AS51859 Mainstream doo Beograd 0.42ms from Belgrade, RS
91.214.200.0 AS51859 Mainstream doo Beograd 3.97ms from Belgrade, RS
91.185.218.34 AS51859 Mainstream doo Beograd 0.69ms from Ljubljana, SI
185.167.144.77 AS51859 Mainstream doo Beograd 0.53ms from Sofia, BG
87.237.201.133 AS51859 Mainstream doo Beograd 0.45ms from Belgrade, RS
91.185.199.81 AS51859 Mainstream doo Beograd 0.61ms from Ljubljana, SI
185.167.147.10 AS51859 Mainstream doo Beograd 0.67ms from Sofia, BG
185.29.102.242 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
2a04:2e40:4301::12 AS51859 Mainstream doo Beograd 0.86ms from Belgrade, RS
188.93.123.91 AS51859 Mainstream doo Beograd 0.54ms from Belgrade, RS
91.222.4.67 AS51859 Mainstream doo Beograd 0.43ms from Belgrade, RS
212.72.214.193 AS51859 Mainstream doo Beograd 0.67ms from Sofia, BG
87.237.207.251 AS51859 Mainstream doo Beograd 0.56ms from Belgrade, RS
188.93.122.104 AS51859 Mainstream doo Beograd 0.65ms from Belgrade, RS
185.29.100.254 AS51859 Mainstream doo Beograd 0.47ms from Belgrade, RS
188.93.120.1 AS51859 Mainstream doo Beograd 0.40ms from Belgrade, RS
185.168.19.32 AS51859 Mainstream doo Beograd 0.50ms from Belgrade, RS
91.222.6.254 AS51859 Mainstream doo Beograd 0.64ms from Belgrade, RS
213.91.181.13 AS51859 Mainstream doo Beograd 0.63ms from Sofia, BG
2a04:2e40:4202::1 AS51859 Mainstream doo Beograd 1.05ms from Belgrade, RS
87.237.202.211 AS51859 Mainstream doo Beograd 0.45ms from Belgrade, RS
92.249.55.238 AS51859 Mainstream doo Beograd 0.36ms from Belgrade, RS
91.222.5.249 AS51859 Mainstream doo Beograd 0.53ms from Belgrade, RS
185.29.103.195 AS51859 Mainstream doo Beograd 0.45ms from Belgrade, RS

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
52.43.72.147 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
68.154.72.195 AS8075 Microsoft Corporation 0.25ms from Boydton, US
108.234.27.195 AS7018 AT&T Enterprises, LLC 6.18ms from Chicago, US
51.38.91.179 AS16276 OVH SAS 0.08ms from Erith, GB
60.184.40.35 AS4134 CHINANET-BACKBONE 7.34ms from Hangzhou, CN
23.178.80.3 AS46723 Unlabeled LLC 0.27ms from Herndon, US
14.164.11.115 AS45899 VNPT Corp 6.16ms from Ho Chi Minh City, VN
81.201.135.67 AS61323 ANS ACADEMY LIMITED 0.42ms from Manchester, GB
176.141.44.3 AS5410 Bouygues Telecom SA 3.71ms from Marseille, FR
172.217.75.195 AS15169 Google LLC 0.32ms from Mumbai, IN
125.9.39.51 AS9824 JCOM Co., Ltd. 10.83ms from Osaka, JP
177.43.221.3 AS18881 TELEFÔNICA BRASIL S.A 1.91ms from Osasco, BR
112.236.67.19 AS4837 CHINA UNICOM China169 Backbone 7.43ms from Qingdao, CN
177.142.189.131 AS28573 Claro NXT Telecomunicacoes Ltda 8.08ms from Rio de Janeiro, BR
178.64.207.115 AS12389 PJSC Rostelecom 11.06ms from Saint Petersburg, RU
45.14.115.195 AS27323 Wowrack.com 0.35ms from Seattle, US
58.232.230.99 AS9318 SK Broadband Co Ltd 1.66ms from Seoul, KR
60.189.244.131 AS4134 CHINANET-BACKBONE 9.86ms from Shanghai, CN
181.123.57.243 AS23201 Telecel S.A. 7.89ms from Asuncion, PY
130.149.230.35 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 0.91ms from Berlin, DE
113.246.57.3 AS4134 CHINANET-BACKBONE 1.93ms from Changsha, CN
45.132.64.3 AS12293 Xvid Services OU 0.34ms from Frankfurt am Main, DE
35.241.98.35 AS396982 Google LLC 0.10ms from Hong Kong, HK
68.206.237.83 AS11427 Charter Communications Inc 7.05ms from Houston, US
176.24.191.83 AS5607 Sky UK Limited 5.57ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -f4 92.249.55.172
traceroute to 92.249.55.172 (92.249.55.172): 64 hops max, 52 byte packets
4 [] 185.1.27.51 3.86 ms
5 [AS51859] 91.222.4.130 4.868 ms
6 [AS51859] 91.222.7.73 2.565 ms
Measurement taken from IPinfo ProbeNet in Belgrade, RS
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 AS51859 at robtex.

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