AS21127 Joint Stock Company TransTeleCom

Every prefix the ASN database assigns to AS21127, the operator behind it, the registry that allocated the system and when, and what the operator lists say about it. Facts about a network, read from data held on this server — never about whoever is using an address today.

The system at a glance

Number	AS21127
Operator	Joint Stock Company TransTeleCom
Operator type	an Internet service provider
Registry	RIPE NCC
Registry country	RU
Allocated	2001-09-03
Prefixes	155 IPv4, 1 IPv6
Threat blocklist	not listed
Satellite ISP	not listed
Mobile carrier	not listed

The flags are what the lookup applies to every address of the system: Spamhaus ASN-DROP names operators behind hijacked or leased netblocks, and the satellite and mobile lists are curated and positive-only, so "not listed" means exactly that and never a guess.

IPv4 prefixes (155)

37.49.208.0/20
37.49.192.0/21
37.49.200.0/22
37.49.206.0/24
37.205.48.0/21
37.205.80.0/20
37.205.64.0/21
37.205.72.0/22
37.205.78.0/23
37.205.76.0/24
46.50.128.0/19
46.50.176.0/20
46.50.168.0/21
46.50.164.0/22
46.50.160.0/23
46.50.163.0/24
46.50.224.0/19
46.50.208.0/20
46.50.192.0/21
46.50.200.0/22
46.50.204.0/23
46.50.206.0/24
46.241.0.0/20
46.241.24.0/21
46.241.20.0/22
46.241.16.0/23
46.241.48.0/20
46.241.32.0/21
46.241.40.0/22
46.241.46.0/23
46.241.45.0/24
46.241.64.0/22
46.241.70.0/23
46.241.72.0/22
46.241.76.0/23
46.241.80.0/22
46.241.86.0/23
46.241.92.0/22
46.241.90.0/23
46.241.88.0/24
46.241.96.0/23
46.241.108.0/22
46.241.104.0/23
46.241.107.0/24
46.241.112.0/21
46.241.120.0/22
46.241.124.0/23
46.241.127.0/24
80.89.144.0/20
80.89.128.0/21
80.89.140.0/22
80.89.136.0/23
80.89.138.0/24
81.1.192.0/20
81.1.216.0/21
81.1.212.0/22
81.1.210.0/23
81.1.224.0/21
81.1.236.0/22
81.1.234.0/23
81.1.233.0/24
81.1.248.0/21
81.1.244.0/22
81.1.240.0/23
81.1.242.0/24
82.200.0.0/20
82.200.24.0/21
82.200.20.0/22
82.200.18.0/23
82.200.16.0/24
82.200.32.0/20
82.200.52.0/22
82.200.48.0/23
82.200.50.0/24
82.200.60.0/22
82.200.56.0/23
82.200.59.0/24
82.200.80.0/20
82.200.64.0/21
82.200.72.0/22
82.200.78.0/23
82.200.76.0/24
82.200.96.0/20
82.200.112.0/21
82.200.124.0/22
82.200.120.0/23
91.105.132.0/22
91.105.130.0/23
91.105.128.0/24
91.105.136.0/22
91.105.140.0/23
91.105.143.0/24
91.105.152.0/21
91.105.144.0/22
91.105.148.0/23
91.105.150.0/24
91.105.160.0/21
91.105.168.0/22
91.105.172.0/23
91.105.174.0/24

100 of 155 shown; the API answers up to 155 and the whole count.

IPv6 prefixes (1)

2a02:2560::/32

The same facts from the API

One call answers the operator, the registry facts, the flags, the prefix counts and up to 500 prefixes per family, 156 in total for this system. It costs one credit, and a repeat inside seven days is free.

$ curl https://spaw.co/api/v1/ip/asn/21127 \
  -H "Authorization: Bearer $SPAW_KEY"

How to read this page

The prefixes are what the free DB-IP ASN database assigns to the system, walked once a month into an index on this server — a database, not a live route table, so a prefix announced yesterday appears at the next build. The registry facts are the regional registries' own daily statistics. None of it says who is behind an address today: a carrier's prefix carries thousands of people, and a hosting operator's carries whatever its customers run.

More networks

asn-prefixes 2026-09-12 · dbip-asn-lite 2026-09-01 · rir-allocations 2026-09-12 · threat-blocklists 2026-09-12 · satellite-asns 2026-09-12 · mobile-carrier-asns 2026-09-12 · index built 2026-09-12

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