37.21.128.0/18

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 37.21.128.0/18

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

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
37.21.192.0/18	AS12389	JSC Rostelecom regional branch Siberia	16,384

Hosted domains

There are no domains currently hosted on this ASN.

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

14,623 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
37.21.144.229	AS12389 PJSC Rostelecom	`5.57ms` from Novosibirsk, RU
37.21.169.118	AS12389 PJSC Rostelecom	`5.26ms` 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
37.21.155.240	AS12389 PJSC Rostelecom	`5.47ms` from Novosibirsk, RU
37.21.181.32	AS12389 PJSC Rostelecom	`5.47ms` from Novosibirsk, RU
37.21.148.143	AS12389 PJSC Rostelecom	`5.56ms` from Novosibirsk, RU
37.21.171.203	AS12389 PJSC Rostelecom	`5.53ms` from Novosibirsk, RU
37.21.185.26	AS12389 PJSC Rostelecom	`5.50ms` from Novosibirsk, RU
37.21.154.95	AS12389 PJSC Rostelecom	`5.73ms` from Novosibirsk, RU
37.21.143.30	AS12389 PJSC Rostelecom	`5.24ms` 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
88.151.19.226	AS39353 Gobierno del Principado de Asturias	`5.46ms` from A Coruna, ES
41.103.117.18	AS36947 Telecom Algeria	`16.67ms` from Barcelona, ES
200.110.171.98	AS27951 Media Commerce Partners S.A	`4.53ms` from Bogota, CO
79.121.102.2	AS5483 Magyar Telekom Plc.	`2.59ms` from Budapest, HU
2.23.172.242	AS20940 Akamai International B.V.	`0.14ms` from Copenhagen, DK
38.210.231.130	AS265484 CLICK ENTER LTDA - ME	`17.02ms` from Fortaleza, BR
185.2.0.2	AS197745 feel3 UG (haftungsbeschraenkt)	`0.27ms` from Frankfurt am Main, DE
46.19.152.2	AS49603 Nerdherrschaft GmbH	`0.16ms` from Frankfurt am Main, DE
103.100.114.2	AS133527 HuaBo Technology International Limited	`1.74ms` from Hong Kong, HK
188.61.241.34	AS3303 Swisscom (Switzerland) Ltd	`0.81ms` from Lausanne, CH
94.63.74.18	AS12353 Vodafone Portugal	`2.87ms` from Lisbon, PT
197.232.0.130	AS36866 Jamii Telecommunications Limited	`1.79ms` from Nairobi, KE
173.171.43.2	AS33363 Charter Communications, Inc	`8.52ms` from Orlando, US
34.236.250.194	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
45.161.0.18	AS268430 L&R Solucoes em Telecomunicacoes e Servicos Ltda	`1.27ms` from Rio de Janeiro, BR
201.72.66.130	AS4230 CLARO S.A.	`2.78ms` from Sao Paulo, BR
211.60.122.66	AS3786 LG DACOM Corporation	`1.92ms` from Seoul, KR
82.139.136.2	AS8865 MSK BIAMAN	`2.81ms` from Warsaw, PL
74.122.26.2	AS397368 DCNHOST	`1.85ms` from Zuerich, CH
152.136.24.162	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.00ms` from Beijing, CN
54.69.251.130	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
223.82.11.98	AS56045 China Mobile communications corporation	`14.60ms` from Changsha, CN
50.204.23.2	AS33491 Comcast Cable Communications, LLC	`1.62ms` from Chicago, US
50.37.40.162	AS5650 Frontier Communications of America, Inc.	`12.16ms` from Chicago, US
75.209.147.178	AS6167 Verizon Business	`11.04ms` from Chicago, US

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

2 [AS12389] 212.20.21.241 0.962 ms

3 *

4 *

5 [AS12389] 37.21.150.88 6.556 ms

Measurement taken from

IPinfo ProbeNet in Novosibirsk, RU

On October 30th 2025

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.

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