1. All IP Ranges
  2. 37.0.0.0/8
  3. 37.21.0.0/16
  4. AS12389  | 37.21.128.0/17

37.21.128.0/17

AS12389  ·  PJSC Rostelecom

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Summary

Country Russia
Domain rostelecom.ru
ASN AS12389
Parent Range 37.20.0.0/14
Registry RIPE
ID WEBSTREAM

WHOIS Details

inetnum:        37.21.128.0 - 37.21.191.255
netname:        WEBSTREAM
descr:          JSC Rostelecom regional branch Siberia
remarks:        Tomsk broadband service
country:        RU
remarks:        
remarks:        NCC
remarks:        INFRA AW
remarks:        
admin-c:        DIN-RIPE
admin-c:        NSOE11-RIPE
tech-c:         DIN-RIPE
tech-c:         NSOE22-RIPE
mnt-by:         ROSTELECOM-MNT
status:         ASSIGNED PA
remarks:        
remarks:        Direct reference for the general info on spam
remarks:        In unsoluble cases for the general info on spam,
remarks:        abusing & hacking complaints email
remarks:        hostmaster@tomsknet.ru
remarks:        
notify:         lir@ncc.sibirtelecom.ru
created:        2012-01-12T01:59:55Z
last-modified:  2025-06-27T09:40:31Z
source:         RIPE
abuse-email:    abuse@rt.ru
abuse-c:        RTNC-RIPE
abuse-org:      ORG-JR8-RIPE

role:           DIN Tomsktelecom NET Contact Role
address:        Digital Information Network
address:        Tomsktelecom
address:        40, Chernykh str.,
address:        634063, Tomsk, Russia
phone:          +7 3822 662510
phone:          +7 3822 662506
phone:          +7 3822 559876
fax-no:         +7 3822 662502
e-mail:         noc@tomsknet.ru
remarks:        trouble: URI2-RIPE
remarks:        trouble: VAD-RIPE
admin-c:        SLY-RIPE
admin-c:        VAD-RIPE
tech-c:         SLY-RIPE
tech-c:         URI2-RIPE
tech-c:         VAD-RIPE
nic-hdl:        DIN-RIPE
notify:         noc@tomsknet.ru
mnt-by:         DIN-RIPE-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2022-07-19T12:19:00Z
source:         RIPE

role:           NSOELSVZ admin-c role
address:        JSC Sibirtelecom
address:        18, Ordjenikidze str.,
address:        630099, Novosibirsk, Russia
phone:          +7 383 2 270669
fax-no:         +7 383 2 270017
e-mail:         noc@sinor.ru
admin-c:        YOL1-RIPE
admin-c:        VIK15-RIPE
tech-c:         YOL1-RIPE
tech-c:         VIK15-RIPE
nic-hdl:        NSOE11-RIPE
notify:         noc@sinor.ru
mnt-by:         NSOELSV-NCC
created:        2005-03-29T04:58:27Z
last-modified:  2008-09-08T05:37:10Z
source:         RIPE

role:           NSOELSVZ tech-c role
address:        JSC Sibirtelecom
address:        18, Ordjenikidze str.,
address:        630099, Novosibirsk, Russia
phone:          +7 383 2 270669
fax-no:         +7 383 2 270017
e-mail:         noc@sinor.ru
admin-c:        YOL1-RIPE
admin-c:        VIK15-RIPE
tech-c:         YOL1-RIPE
tech-c:         VIK15-RIPE
nic-hdl:        NSOE22-RIPE
notify:         noc@sinor.ru
mnt-by:         NSOELSV-NCC
created:        2005-03-29T04:55:41Z
last-modified:  2008-09-08T05:37:11Z
source:         RIPE

route:          37.21.128.0/18
descr:          JSC Rostelecom regional branch Siberia
remarks:        Tomsk branch
origin:         AS12389
mnt-by:         ROSTELECOM-MNT
notify:         lir@ncc.sibirtelecom.ru
created:        2019-04-30T02:19:23Z
last-modified:  2025-06-27T05:44:36Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 37.21.128.0/17

Range ASN Company Num of IPs
37.20.0.0/14 AS12389 PJSC Rostelecom 262,144

BGP prefixes that are contained by 37.21.128.0/17

Range ASN Company Num of IPs
37.21.128.0/18 AS12389 JSC Rostelecom regional branch Siberia 16,384
37.21.192.0/18 AS12389 JSC Rostelecom regional branch Siberia 16,384

Nearby Ranges

BGP prefixes that overlap with 37.21.0.0/16

Range ASN Company Num of IPs
37.20.0.0/14 AS12389 PJSC Rostelecom 262,144
37.21.128.0/18 AS12389 JSC Rostelecom regional branch Siberia 16,384
37.21.192.0/18 AS12389 JSC Rostelecom regional branch Siberia 16,384

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
37.21.251.149 tpmix.pro 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

29,442 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
37.21.139.6 AS12389 PJSC Rostelecom 5.36ms from Novosibirsk, RU
37.21.132.84 AS12389 PJSC Rostelecom 5.18ms from Novosibirsk, RU
37.21.138.29 AS12389 PJSC Rostelecom 5.63ms from Novosibirsk, RU
37.21.136.213 AS12389 PJSC Rostelecom 5.23ms from Novosibirsk, RU
37.21.128.1 AS12389 PJSC Rostelecom 4.94ms from Novosibirsk, RU
37.21.135.163 AS12389 PJSC Rostelecom 5.75ms from Novosibirsk, RU
37.21.133.83 AS12389 PJSC Rostelecom 5.37ms from Novosibirsk, RU
37.21.140.149 AS12389 PJSC Rostelecom 5.73ms from Novosibirsk, RU
37.21.131.195 AS12389 PJSC Rostelecom 5.68ms from Novosibirsk, RU
37.21.130.242 AS12389 PJSC Rostelecom 5.23ms from Novosibirsk, RU
37.21.129.117 AS12389 PJSC Rostelecom 5.80ms from Novosibirsk, RU
37.21.137.189 AS12389 PJSC Rostelecom 5.60ms from Novosibirsk, RU
37.21.141.155 AS12389 PJSC Rostelecom 5.26ms from Novosibirsk, RU
37.21.134.153 AS12389 PJSC Rostelecom 5.50ms from Novosibirsk, RU
37.21.255.207 AS12389 PJSC Rostelecom 5.39ms from Novosibirsk, RU
37.21.144.229 AS12389 PJSC Rostelecom 5.57ms from Novosibirsk, RU
37.21.169.118 AS12389 PJSC Rostelecom 5.26ms from Novosibirsk, RU
37.21.208.86 AS12389 PJSC Rostelecom 5.67ms from Novosibirsk, RU
37.21.204.200 AS12389 PJSC Rostelecom 5.44ms from Novosibirsk, RU
37.21.205.161 AS12389 PJSC Rostelecom 5.23ms from Novosibirsk, RU
37.21.193.26 AS12389 PJSC Rostelecom 5.24ms from Novosibirsk, RU
37.21.252.87 AS12389 PJSC Rostelecom 5.43ms from Novosibirsk, RU
37.21.177.221 AS12389 PJSC Rostelecom 5.55ms from Novosibirsk, RU
37.21.173.53 AS12389 PJSC Rostelecom 5.47ms from Novosibirsk, RU
37.21.224.250 AS12389 PJSC Rostelecom 5.45ms from Novosibirsk, RU

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
41.108.48.1 AS36947 Telecom Algeria 11.34ms from Algiers, DZ
77.172.227.97 AS1136 KPN B.V. 0.82ms from Amsterdam, NL
73.251.38.1 AS7922 Comcast Cable Communications, LLC 2.77ms from Ashburn, US
69.59.84.1 AS12208 TruVista Communications 3.48ms from Atlanta, US
79.101.222.1 AS8400 TELEKOM SRBIJA a.d. 1.59ms from Belgrade, RS
186.146.100.1 AS10620 Telmex Colombia S.A. 1.86ms from Bogota, CO
201.25.106.81 AS8167 V tal 4.57ms from Brasilia, BR
200.126.216.1 AS7303 Telecom Argentina S.A. 0.97ms from Buenos Aires, AR
105.75.51.97 AS36884 Wana Corporate 8.87ms from Casablanca, MA
222.215.15.1 AS4134 CHINANET-BACKBONE 9.12ms from Chengdu, CN
104.0.178.1 AS7018 AT&T Enterprises, LLC 9.84ms from Chicago, US
2.111.184.1 AS3292 TDC Holding A/S 2.84ms from Copenhagen, DK
69.76.107.1 AS8052 Charter Communications Inc 14.40ms from Dallas, US
68.32.32.1 AS7922 Comcast Cable Communications, LLC 6.25ms from Detroit, US
91.63.236.193 AS3320 Deutsche Telekom AG 3.80ms from Duesseldorf, DE
91.54.197.1 AS3320 Deutsche Telekom AG 5.30ms from Duesseldorf, DE
162.157.148.1 AS852 TELUS Communications Inc. 1.22ms from Edmonton, CA
120.238.244.81 AS9808 China Mobile Communications Group Co., Ltd. 4.27ms from Guangzhou, CN
121.57.224.1 AS4134 CHINANET-BACKBONE 1.69ms from Hohhot, CN
98.199.184.97 AS7922 Comcast Cable Communications, LLC 5.14ms from Houston, US
95.14.168.1 AS9121 Turk Telekomunikasyon Anonim Sirketi 0.83ms from Istanbul, TR
60.161.46.1 AS4134 CHINANET-BACKBONE 4.39ms from Kunming, CN
82.19.74.193 AS5089 Virgin Media Limited 5.31ms from London, GB
84.125.148.1 AS6739 VODAFONE ONO, S.A. 8.13ms from Madrid, ES
190.128.64.1 AS13489 UNE EPM TELECOMUNICACIONES S.A. 6.52ms from Medellin, CO

Traceroute

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

$
traceroute -a -n -q1 -f2 37.21.150.88
traceroute to 37.21.150.88 (37.21.150.88): 64 hops max, 52 byte packets
3 *
4 *
5 [AS12389] 37.21.150.88 6.556 ms
Measurement taken from IPinfo ProbeNet in Novosibirsk, RU
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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