AS number 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 780
Number of IPv4 9,984
Number of IPv6 673,439,381,371,246,869,545,123,577,856
ASN type Hosting
Registry ripe
Allocated 15 years ago on Nov 17, 2010
Updated a month 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 780 domain names hosted across 239 IP addresses on this ASN.

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IP Address Domain Domains on this IP
87.237.203.194 ██████████ 162
87.237.200.6 ██████████ 59
188.93.122.55 ██████████ 40
185.29.102.100 ██████████ 17
91.222.6.103 █████████ 17
185.29.100.194 ██████████ 17
185.29.102.14 ██████████ 17
185.29.102.213 █████████ 12
185.167.146.179 █████ 11
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 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

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

IP Address ASN Details
87.237.204.121 AS51859 Mainstream doo Beograd 0.50ms from Belgrade, RS
185.168.19.127 AS51859 Mainstream doo Beograd 0.47ms from Belgrade, RS
2a04:2e40:4301::12 AS51859 Mainstream doo Beograd 0.41ms from Belgrade, RS
92.249.55.123 AS51859 Mainstream doo Beograd 0.36ms from Belgrade, RS
185.29.103.195 AS51859 Mainstream doo Beograd 0.44ms from Belgrade, RS
91.185.218.17 AS51859 Mainstream doo Beograd 0.69ms from Ljubljana, SI
188.93.121.30 AS51859 Mainstream doo Beograd 0.47ms from Belgrade, RS
87.237.207.251 AS51859 Mainstream doo Beograd 0.50ms from Belgrade, RS
87.237.206.209 AS51859 Mainstream doo Beograd 0.43ms from Belgrade, RS
185.29.101.99 AS51859 Mainstream doo Beograd 0.41ms from Belgrade, RS
87.237.201.133 AS51859 Mainstream doo Beograd 0.44ms from Belgrade, RS
91.222.5.249 AS51859 Mainstream doo Beograd 0.54ms from Belgrade, RS
91.222.4.16 AS51859 Mainstream doo Beograd 0.46ms from Belgrade, RS
188.93.122.43 AS51859 Mainstream doo Beograd 0.64ms from Belgrade, RS
185.29.102.191 AS51859 Mainstream doo Beograd 0.48ms from Belgrade, RS
212.72.214.208 AS51859 Mainstream doo Beograd 0.74ms from Sofia, BG
87.237.202.211 AS51859 Mainstream doo Beograd 0.48ms from Belgrade, RS
91.185.199.68 AS51859 Mainstream doo Beograd 0.63ms from Ljubljana, SI
87.237.205.52 AS51859 Mainstream doo Beograd 1.03ms from Belgrade, RS
188.93.123.184 AS51859 Mainstream doo Beograd 0.53ms from Belgrade, RS
91.222.7.252 AS51859 Mainstream doo Beograd 0.49ms from Belgrade, RS
91.222.6.185 AS51859 Mainstream doo Beograd 0.59ms from Belgrade, RS
213.91.181.9 AS51859 Mainstream doo Beograd 0.67ms from Sofia, BG
87.237.203.193 AS51859 Mainstream doo Beograd 0.40ms from Belgrade, RS
185.167.147.2 AS51859 Mainstream doo Beograd 0.73ms 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
75.243.99.67 AS6167 Verizon Business 8.28ms from Atlanta, US
98.192.124.35 AS7922 Comcast Cable Communications, LLC 4.80ms from Atlanta, US
35.165.140.19 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
181.174.9.195 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 18.16ms from Bogota, CO
91.33.205.35 AS3320 Deutsche Telekom AG 4.33ms from Duesseldorf, DE
74.213.151.51 AS17378 TierPoint, LLC 1.33ms from Durham, US
3.127.184.35 AS16509 Amazon.com, Inc. 0.18ms from Frankfurt am Main, DE
62.53.238.131 AS6805 Telefonica Germany GmbH & Co.OHG 0.57ms from Frankfurt am Main, DE
130.25.138.51 AS30722 Vodafone Italia S.p.A. 18.11ms from Frosinone, IT
157.156.20.211 AS17816 China Unicom IP network China169 Guangdong province 5.72ms from Guangzhou, CN
47.97.22.83 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 3.80ms from Hangzhou, CN
123.25.62.19 AS45899 VNPT Corp 2.87ms from Hanoi, VN
86.180.214.19 AS2856 British Telecommunications PLC 4.70ms from London, GB
72.207.142.3 AS22773 Cox Communications Inc. 6.07ms from Los Angeles, US
64.33.224.3 AS15204 INTERSTATE TELECOMMUNICATIONS COOPERATIVE, INC. 8.06ms from Minneapolis, US
116.89.8.51 AS55430 Starhub Ltd 2.16ms from Singapore, SG
51.21.68.179 AS16509 Amazon.com, Inc. 0.12ms from Stockholm, SE
203.220.113.163 AS9942 SOUL Converged Communications Australia 10.45ms from Sydney, AU
126.36.130.67 AS17676 SoftBank Corp. 3.56ms from Tokyo, JP
94.42.82.51 AS12912 T-Mobile Polska S.A. 1.16ms from Warsaw, PL
141.224.212.67 AS15435 DELTA Fiber Nederland B.V. 3.50ms from Amsterdam, NL
117.11.26.35 AS4837 CHINA UNICOM China169 Backbone 5.56ms from Beijing, CN
98.24.124.83 AS11426 Charter Communications Inc 5.99ms from Charlotte, US
18.222.206.243 AS16509 Amazon.com, Inc. 0.68ms from Columbus, US
60.12.126.211 AS4837 CHINA UNICOM China169 Backbone 7.12ms from Hangzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f2 188.93.120.142
traceroute to 188.93.120.142 (188.93.120.142): 64 hops max, 52 byte packets
2 [] 185.0.28.29 16.825 ms
3 [] 185.1.27.82 18.058 ms
4 [AS51859] 185.29.100.42 17.652 ms
5 [AS51859] 91.222.4.67 16.907 ms
Measurement taken from IPinfo ProbeNet in Athens, GR
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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