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 973
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 3 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 973 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 ██████████ 352
188.93.122.55 ██████████ 38
185.29.100.194 ██████████ 17
185.29.102.100 ██████████ 17
91.222.6.103 ██████████ 17
185.29.102.14 ██████████ 14
185.29.102.213 █████████ 12
185.29.102.216 ██████ 10
185.29.102.80 ██████████ 10
185.29.102.75 ██████████ 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 6 upstreams for this ASN.

upstreams Name
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

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
91.222.7.252 AS51859 Mainstream doo Beograd 0.58ms from Belgrade, RS
87.237.206.190 AS51859 Mainstream doo Beograd 0.38ms from Belgrade, RS
185.168.19.28 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
212.72.214.193 AS51859 Mainstream doo Beograd 0.63ms from Sofia, BG
91.185.218.24 AS51859 Mainstream doo Beograd 5.19ms from Vienna, AT
92.249.55.107 AS51859 Mainstream doo Beograd 0.38ms from Belgrade, RS
91.222.5.249 AS51859 Mainstream doo Beograd 0.62ms from Belgrade, RS
188.93.121.30 AS51859 Mainstream doo Beograd 0.55ms from Belgrade, RS
87.237.205.21 AS51859 Mainstream doo Beograd 1.04ms from Belgrade, RS
185.167.147.32 AS51859 Mainstream doo Beograd 0.57ms from Sofia, BG
185.167.146.199 AS51859 Mainstream doo Beograd 0.60ms from Sofia, BG
188.93.120.1 AS51859 Mainstream doo Beograd 0.39ms from Belgrade, RS
91.214.200.0 AS51859 Mainstream doo Beograd 2.15ms from Belgrade, RS
87.237.207.251 AS51859 Mainstream doo Beograd 0.62ms from Belgrade, RS
185.29.101.70 AS51859 Mainstream doo Beograd 0.39ms from Belgrade, RS
91.222.4.24 AS51859 Mainstream doo Beograd 0.51ms from Belgrade, RS
87.237.201.134 AS51859 Mainstream doo Beograd 0.56ms from Belgrade, RS
188.93.122.26 AS51859 Mainstream doo Beograd 0.58ms from Belgrade, RS
185.29.102.115 AS51859 Mainstream doo Beograd 0.42ms from Belgrade, RS
185.167.144.43 AS51859 Mainstream doo Beograd 0.56ms from Sofia, BG
87.237.203.49 AS51859 Mainstream doo Beograd 0.36ms from Belgrade, RS
2a04:2e40:4301::12 AS51859 Mainstream doo Beograd 0.96ms from Belgrade, RS
91.222.6.254 AS51859 Mainstream doo Beograd 0.56ms from Belgrade, RS
185.29.100.203 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
213.91.181.7 AS51859 Mainstream doo Beograd 0.64ms from Sofia, BG

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
2.51.19.227 AS5384 Emirates Internet 3.22ms from Al Fujairah City, AE
75.97.14.83 AS3737 PenTeleData Inc. 11.97ms from Ashburn, US
125.165.103.51 AS7713 PT Telekomunikasi Indonesia 8.34ms from Batam, ID
209.35.117.3 AS394728 Miles Cooperative Telephone Association, Inc. 5.69ms from Chicago, US
76.141.50.67 AS7922 Comcast Cable Communications, LLC 5.13ms from Chicago, US
88.112.26.163 AS719 Elisa Oyj 2.92ms from Helsinki, FI
178.150.105.131 AS13188 CONTENT DELIVERY NETWORK LTD 7.08ms from Kharkiv, UA
94.15.158.67 AS5607 Sky UK Limited 3.44ms from London, GB
154.58.193.99 AS212087 JOTELULU S.L. 0.79ms from Madrid, ES
73.28.78.115 AS7922 Comcast Cable Communications, LLC 4.50ms from Miami, US
151.16.209.163 AS1267 WIND TRE S.P.A. 5.49ms from Milan, IT
92.203.250.179 AS2527 Sony Network Communications Inc. 1.30ms from Osaka, JP
95.230.129.35 AS3269 Telecom Italia S.p.A. 4.16ms from Rome, IT
170.106.110.163 AS132203 Tencent Building, Kejizhongyi Avenue 0.28ms from San Jose, US
85.87.144.3 AS15704 XTRA TELECOM S.A. 0.80ms from Sevilla, ES
111.243.217.83 AS3462 Data Communication Business Group 3.96ms from Taipei, TW
42.177.230.35 AS4837 CHINA UNICOM China169 Backbone 10.20ms from Tieling, CN
193.234.249.3 AS1299 Arelion Sweden AB 16.29ms from Atlanta, US
58.245.222.179 AS4837 CHINA UNICOM China169 Backbone 8.69ms from Changchun, CN
18.216.24.51 AS16509 Amazon.com, Inc. 0.13ms from Columbus, US
171.227.4.227 AS7552 Viettel Group 9.86ms from Ho Chi Minh City, VN
69.154.200.211 AS7018 AT&T Enterprises, LLC 8.47ms from Kansas City, US
89.145.66.19 AS29017 NTT Global Data Centers EMEA UK Ltd. 1.43ms from London, GB
151.2.238.243 AS31655 Gamma Telecom Holdings Ltd 4.58ms from London, GB
76.109.117.67 AS7922 Comcast Cable Communications, LLC 5.60ms from Miami, US

Traceroute

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

$
traceroute -a -n -q1 -f3 87.237.201.166
traceroute to 87.237.201.166 (87.237.201.166): 64 hops max, 52 byte packets
3 [] 185.1.27.82 34.596 ms
4 [AS51859] 185.29.100.35 35.512 ms
5 [AS51859] 91.222.7.75 34.815 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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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