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 244 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 ██████████ 40
91.222.6.103 █████████ 17
185.29.102.100 ██████████ 17
185.29.100.194 ██████████ 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 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
91.185.218.15 AS51859 Mainstream doo Beograd 0.67ms from Ljubljana, SI
185.29.101.69 AS51859 Mainstream doo Beograd 0.43ms from Belgrade, RS
91.185.199.67 AS51859 Mainstream doo Beograd 0.60ms from Ljubljana, SI
185.29.102.232 AS51859 Mainstream doo Beograd 0.47ms from Belgrade, RS
185.167.144.77 AS51859 Mainstream doo Beograd 0.54ms from Sofia, BG
188.93.120.1 AS51859 Mainstream doo Beograd 0.49ms from Belgrade, RS
188.93.121.30 AS51859 Mainstream doo Beograd 0.48ms from Belgrade, RS
91.222.7.7 AS51859 Mainstream doo Beograd 0.54ms from Belgrade, RS
87.237.206.209 AS51859 Mainstream doo Beograd 0.40ms from Belgrade, RS
2a04:2e40:4301::12 AS51859 Mainstream doo Beograd 0.94ms from Belgrade, RS
87.237.204.122 AS51859 Mainstream doo Beograd 0.52ms from Belgrade, RS
185.167.147.32 AS51859 Mainstream doo Beograd 0.59ms from Sofia, BG
2a04:2e40:4202::1 AS51859 Mainstream doo Beograd 1.11ms from Belgrade, RS
185.29.103.195 AS51859 Mainstream doo Beograd 0.44ms from Belgrade, RS
87.237.205.73 AS51859 Mainstream doo Beograd 1.03ms from Belgrade, RS
91.185.219.16 AS51859 Mainstream doo Beograd 0.70ms from Ljubljana, SI
87.237.201.132 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
212.72.214.70 AS51859 Mainstream doo Beograd 0.68ms from Sofia, BG
188.93.123.84 AS51859 Mainstream doo Beograd 0.56ms from Belgrade, RS
185.167.146.139 AS51859 Mainstream doo Beograd 0.66ms from Sofia, BG
87.237.207.250 AS51859 Mainstream doo Beograd 0.56ms from Belgrade, RS
91.222.5.249 AS51859 Mainstream doo Beograd 0.54ms from Belgrade, RS
185.168.19.132 AS51859 Mainstream doo Beograd 0.52ms from Belgrade, RS
185.29.100.19 AS51859 Mainstream doo Beograd 0.49ms from Belgrade, RS
87.237.203.193 AS51859 Mainstream doo Beograd 0.43ms 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
104.55.144.51 AS7018 AT&T Enterprises, LLC 12.19ms from Chicago, US
35.202.199.83 AS396982 Google LLC 0.12ms from Council Bluffs, US
122.160.178.179 AS24560 Bharti Airtel Ltd., Telemedia Services 1.69ms from Delhi, IN
177.89.85.163 AS28220 Alares Cabo Servicos de Telecomunicacoes S.A. 14.02ms from Fortaleza, BR
109.156.123.211 AS2856 British Telecommunications PLC 5.86ms from London, GB
162.196.30.131 AS7018 AT&T Enterprises, LLC 6.63ms from Miami, US
79.17.30.3 AS3269 Telecom Italia S.p.A. 15.73ms from Rome, IT
188.8.42.211 AS3269 Telecom Italia S.p.A. 2.67ms from Rome, IT
188.243.234.99 AS35807 SkyNet Ltd. 1.15ms from Saint Petersburg, RU
162.214.188.35 AS46606 Unified Layer 2.02ms from Salt Lake City, US
27.239.210.163 AS4766 Korea Telecom 9.15ms from Seoul, KR
58.232.230.99 AS9318 SK Broadband Co Ltd 1.65ms from Seoul, KR
77.70.34.3 AS29580 A1 Bulgaria EAD 0.61ms from Sofia, BG
2.68.3.211 AS44034 Hi3G Access AB 7.97ms from Stockholm, SE
77.191.229.227 AS6805 Telefonica Germany GmbH & Co.OHG 4.94ms from Berlin, DE
73.38.18.115 AS7922 Comcast Cable Communications, LLC 6.57ms from Boston, US
66.114.17.147 AS26894 Northwest Ohio Area Computer Services Cooperative 3.40ms from Columbus, US
177.154.203.115 AS262293 Sistema Oeste de Serviços LTDA 6.80ms from Fortaleza, BR
194.95.62.163 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 2.69ms from Frankfurt am Main, DE
209.45.96.19 AS3132 Red Cientifica Peruana 0.52ms from Lima, PE
109.208.249.83 AS3215 Orange S.A. 3.69ms from Marseille, FR
151.79.136.83 AS1267 WIND TRE S.P.A. 4.46ms from Milan, IT
125.114.112.83 AS4134 CHINANET-BACKBONE 3.88ms from Ningbo, CN
210.153.76.35 AS2514 NTT PC Communications, Inc. 6.17ms from Osaka, JP
179.144.168.3 AS26599 TELEFÔNICA BRASIL S.A 6.33ms from Rio de Janeiro, BR

Traceroute

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

$
traceroute -a -n -q1 -f2 91.185.199.60
traceroute to 91.185.199.60 (91.185.199.60): 64 hops max, 52 byte packets
2 [] 80.81.194.160 12.441 ms
3 [AS51859] 91.185.199.60 18.179 ms
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
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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