Home ASN LookupAS21127

AS21127 ZSTTKAS Joint Stock Company TransTeleCom

🇷🇺

Org handle: ORG-CJSC19-RIPE

Novosibirsk, Russia

RIPE NCCallocated

Announced Prefixes (BGP)

276total

273 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)244,144

Announced (BGP)323,328

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

1,000

Prefix Limit (IPv6)

Country

🇷🇺 RU

RIR

RIPE NCC

Status

allocated

Allocated

2001-09-03

Announced Prefixes

(BGP)276

Prefix	RPKI	IRR	Last Seen
37.49.192.0/19	Valid	RIPE	2026-10-11
37.49.192.0/23	Valid	-	2026-10-11
37.49.196.0/24	Valid	-	2026-10-11
37.49.200.0/24	Valid	-	2026-10-11
37.49.201.0/24	Valid	-	2026-10-11
37.49.203.0/24	Valid	-	2026-10-11
37.49.208.0/23	Valid	-	2026-10-11
37.49.208.0/24	Valid	-	2026-10-11
37.49.216.0/24	Valid	-	2026-10-11
37.49.220.0/24	Valid	-	2026-10-11

1-10 of 276

1 / 28

Allocated Prefixes

(RIR)58

Prefix	Country	RIR	Status
37.49.192.0/19	🇷🇺 RU	RIPENCC	allocated
37.205.48.0/21	🇷🇺 RU	RIPENCC	allocated
37.205.48.0/24	🇷🇺 RU	RIPE	assigned
37.205.53.0/24	🇷🇺 RU	RIPE	assigned
37.205.64.0/19	🇷🇺 RU	RIPENCC	allocated
37.205.84.0/24	🇷🇺 RU	RIPE	assigned
37.205.88.0/23	🇷🇺 RU	RIPE	assigned
46.50.128.0/17	🇷🇺 RU	RIPENCC	allocated
46.241.0.0/17	🇷🇺 RU	RIPENCC	allocated
46.241.98.0/23	🇷🇺 RU	RIPE	assigned

1-10 of 58

1 / 6

All 276 announced prefixes of AS21127 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS21127 hands its own prefixes to: transit providers, or peers at an exchange.

AS20485TRANSTELECOM Joint Stock Company TransTeleCom327

Downstreams (8)

Networks whose own prefixes AS21127 passes on: usually its customers.

AS31364INTELBI Joint Stock Company TransTeleCom47
AS42323CONNECT Limited Liability Company "TTK Svyaz"3
AS42408TSV Transvyaz N2
AS30871MUNIC Municipalnoe Kazennoe Uchrezhdenie Goroda Novosibirska "Hozyaistvennoe Upravlenie"1
AS47530NVTC Novokuznetsk Telecom1
AS51256OEZ JSC "Special Economic Zone Of Technology Innovative Type "Tomsk"1
AS58008ASRUSHOLOD Service Desk1
AS198021BA NSK "Business Alliance"1

Transfer History

Registry transfers of AS21127 between organisations.

AS21127M&A · 2021-09-14
JSC "Zap-SibTransTelekom"
RIPE NCC
→
Joint Stock Company TransTeleCom
RIPE NCC

Date	Resource	From	To	Type
2021-09-14	AS21127	JSC "Zap-SibTransTelekom" RIPE NCC	Joint Stock Company TransTeleCom RIPE NCC	M&A

ASPA

No ASPA

Abuse Contact

+31205354444

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS21127 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/21127

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/21127" | jq