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 862
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 862 domain names hosted across 238 IP addresses on this ASN.

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IP Address Domain Domains on this IP
87.237.203.194 ██████████ 244
87.237.200.6 ██████████ 63
188.93.122.55 ██████████ 40
185.29.102.100 ██████████ 17
91.222.6.103 ██████████ 17
185.29.100.194 ██████████ 17
185.29.102.14 ██████████ 16
185.29.102.213 ██████ 12
185.29.102.80 ██████████ 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
87.237.202.211 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
87.237.206.8 AS51859 Mainstream doo Beograd 0.41ms from Belgrade, RS
91.222.5.249 AS51859 Mainstream doo Beograd 0.51ms from Belgrade, RS
87.237.205.73 AS51859 Mainstream doo Beograd 1.00ms from Belgrade, RS
185.167.146.74 AS51859 Mainstream doo Beograd 0.71ms from Sofia, BG
91.214.200.0 AS51859 Mainstream doo Beograd 3.99ms from Belgrade, RS
185.29.101.76 AS51859 Mainstream doo Beograd 0.43ms from Belgrade, RS
92.249.55.204 AS51859 Mainstream doo Beograd 0.35ms from Belgrade, RS
185.29.100.129 AS51859 Mainstream doo Beograd 0.48ms from Belgrade, RS
91.185.199.68 AS51859 Mainstream doo Beograd 0.61ms from Ljubljana, SI
91.185.219.16 AS51859 Mainstream doo Beograd 0.69ms from Ljubljana, SI
188.93.121.11 AS51859 Mainstream doo Beograd 0.47ms from Belgrade, RS
87.237.207.251 AS51859 Mainstream doo Beograd 0.52ms from Belgrade, RS
91.222.6.254 AS51859 Mainstream doo Beograd 0.63ms from Belgrade, RS
188.93.122.41 AS51859 Mainstream doo Beograd 0.64ms from Belgrade, RS
2a04:2e40:4202::1 AS51859 Mainstream doo Beograd 1.04ms from Belgrade, RS
212.72.214.148 AS51859 Mainstream doo Beograd 0.75ms from Sofia, BG
213.91.181.52 AS51859 Mainstream doo Beograd 0.67ms from Sofia, BG
188.93.120.1 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
2a04:2e40:300::eeee:2 AS51859 Mainstream doo Beograd 0.88ms from Belgrade, RS
87.237.204.122 AS51859 Mainstream doo Beograd 0.51ms from Belgrade, RS
91.222.7.8 AS51859 Mainstream doo Beograd 0.50ms from Belgrade, RS
91.185.218.11 AS51859 Mainstream doo Beograd 0.69ms from Ljubljana, SI
185.167.144.43 AS51859 Mainstream doo Beograd 0.62ms from Sofia, BG
188.93.123.120 AS51859 Mainstream doo Beograd 0.59ms 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
20.62.134.3 AS8075 Microsoft Corporation 0.43ms from Ashburn, US
186.128.43.67 AS22927 Telefonica de Argentina 2.05ms from Buenos Aires, AR
75.183.107.179 AS11426 Charter Communications Inc 9.23ms from Charlotte, US
104.235.236.19 AS5650 Frontier Communications of America, Inc. 12.18ms from Chicago, US
219.147.147.131 AS17897 asn for Heilongjiang Provincial Net of CT 13.09ms from Dalian, CN
128.203.173.115 AS8075 Microsoft Corporation 0.15ms from Des Moines, US
63.33.213.35 AS16509 Amazon.com, Inc. 0.42ms from Dublin, IE
86.147.29.67 AS2856 British Telecommunications PLC 2.09ms from Erith, GB
110.80.20.99 AS4134 CHINANET-BACKBONE 5.47ms from Fuzhou, CN
123.21.70.115 AS45899 VNPT Corp 1.68ms from Ho Chi Minh City, VN
117.195.226.211 AS9829 National Internet Backbone 17.29ms from Kolkata, IN
18.170.3.83 AS16509 Amazon.com, Inc. 0.44ms from London, GB
176.207.179.67 AS1267 WIND TRE S.P.A. 15.34ms from Milan, IT
115.31.40.163 AS7522 STNet, Incorporated 3.86ms from Osaka, JP
192.163.250.19 AS46606 Unified Layer 2.03ms from Salt Lake City, US
34.2.21.67 AS15169 Google LLC 0.13ms from Singapore, SG
27.94.65.3 AS2516 KDDI CORPORATION 1.16ms from Tokyo, JP
174.100.10.115 AS10796 Charter Communications Inc 12.98ms from Toronto, CA
86.80.71.227 AS1136 KPN B.V. 2.06ms from Amsterdam, NL
74.205.128.227 AS26827 EPB Fiber Optics 3.61ms from Atlanta, US
113.246.57.3 AS4134 CHINANET-BACKBONE 1.93ms from Changsha, CN
108.234.27.195 AS7018 AT&T Enterprises, LLC 5.58ms from Chicago, US
121.203.136.99 AS17924 SmarTone Mobile Communications Ltd 10.68ms from Hong Kong, HK
188.227.150.179 AS56882 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL 1.31ms from Madrid, ES
185.222.30.227 AS20473 The Constant Company, LLC 0.15ms from Mumbai, IN

Traceroute

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

$
traceroute -a -n -q1 -f2 91.185.199.40
traceroute to 91.185.199.40 (91.185.199.40): 64 hops max, 52 byte packets
2 [] 91.200.241.140 0.249 ms
3 [] 195.66.225.141 28.274 ms
4 [AS21215] 185.81.60.19 22.586 ms
Measurement taken from IPinfo ProbeNet in London, GB
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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