AS21127 Joint Stock Company TransTeleCom

Russia ZSTTKAS RIPE 48 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

232,448

IPv6 /48 networks

65,536

RPKI

21 valid30 no ROA

Peers and downstreams

Holder

AS name: ZSTTKAS
Description: Novosibirsk, Russia
Organisation: Joint Stock Company TransTeleCom
Registered in: Moscow, Russia
Abuse contact: abuse@ttk.ru
Assigned: 2001-09-02
Registered: 2002-08-01
Record last changed: 2025-07-22 04:24 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 70/100

partly	Prefixes covered by valid ROAs 21 of 51 announced prefixes are RPKI valid, 30 have no ROA.	10/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 3 IPv6 prefixes.	15/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact abuse@ttk.ru is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2025-07-22.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

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Markdown

[![AS21127 network health](https://ip-fd.net/badge/asn/21127/health.svg)](https://ip-fd.net/asn/21127)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 19:04 UTC

New neighbour

AS58008

downstream

WHOIS

aut-num:        AS21127
as-name:        ZSTTKAS
org:            ORG-CJSC19-RIPE
descr:          Novosibirsk, Russia
remarks:        
remarks:        AS21127 Looking glass is available at http://lg.zsttk.net
remarks:        
remarks:        ---------------------------------------------------------
remarks:        IPv4 Routing Policy
remarks:        ---------------------------------------------------------
remarks:        
remarks:        Uplinks
remarks:        Customers
remarks:        IX
remarks:        Customers
remarks:        
remarks:        ----------------------------------------------------------
remarks:        IPv6 Routing Policy
remarks:        ----------------------------------------------------------
remarks:        
remarks:        ----------------------------------------------------------
remarks:        Upstreams
remarks:        ----------------------------------------------------------
remarks:        
remarks:        ----------------------------------------------------------
remarks:        Peers
remarks:        ----------------------------------------------------------
remarks:        
remarks:        ---------------------------------------------------------
remarks:        Customers
remarks:        ---------------------------------------------------------
remarks:        
remarks:        +==============================================================+
remarks:        BGP COMMUNITIES
remarks:        +--------------------------------------------------------------+
remarks:        Communities for prefix classification
remarks:        +--------------------------------------------------------------+
remarks:        All inbound prefixes are marked with BGP communities
remarks:        which describe their source and geographical region.
remarks:        The format for the second component of community
remarks:        (number after 21127:) is set at five digits.
remarks:        This format is 21127:AABBC where the fields are:
remarks:        
remarks:        AA - source of the prefix:
remarks:        
remarks:        49 - Peer
remarks:        
remarks:        BB - Upstream, peer or customer number:
remarks:        
remarks:        Peers:
remarks:        
remarks:        01 - Megafon (AS50928)
remarks:        02 - Er-Telecom (AS9049)
remarks:        03 - Novotelecom (AS31200)
remarks:        04 - OmskTranzitTelecom (AS47246)
remarks:        05 - Pleksor-Telecom (AS56957)
remarks:        06 - Tomica (AS49414)
remarks:        99 - All Peers
remarks:        
remarks:        C - Internal or Global:
remarks:        
remarks:        0 - Internal
remarks:        9 - Zapadnaya-Sibir
remarks:        
remarks:        +--------------------------------------------------------------+
remarks:        Communities for prefix control
remarks:        +--------------------------------------------------------------+
remarks:        | !!!ATTENTION!!! |
remarks:        The using of this communities may cause connectivity
remarks:        problems and you must clearly understand what you
remarks:        are doing. TransTeleCom does not bear any responsibility
remarks:        if there will be such troubles.
remarks:        +--------------------------------------------------------------+
remarks:        There are two predetermined eBGP session types
remarks:        which customers may use:
remarks:        1 - Global Internet Access. ZSTTK announce
remarks:        customer's prefixes to all customers,
remarks:        upstreams and peers.
remarks:        BGP communities are available.
remarks:        
remarks:        2 - Access to customers and Russian peers.
remarks:        
remarks:        Customers with Global Internet Access may control
remarks:        prefixes that they announce to ZSTTK by eBGP.
remarks:        You can use communities that prepend prefix path
remarks:        with additional AS hops or deny it announcement to
remarks:        any Upstream or peer. The first digit of the second
remarks:        part of control community (number after 21127:)
remarks:        is 5 (five). Next four digits are:
remarks:        
remarks:        - To prepand or deny prefix use 21127:5DNNA, where:
remarks:        
remarks:        D - destination of the prepend or deny action:
remarks:        2 - Upstreams
remarks:        3 - Peers
remarks:        9 - Upstreams and Peers
remarks:        
remarks:        NN - Upstream or peer number:
remarks:        
remarks:        Upstreams:
remarks:        
remarks:        01 - TTK (AS20485)
remarks:        99 - All Upstreams
remarks:        
remarks:        Peers:
remarks:        
remarks:        01 - Megafon (AS50928)
remarks:        02 - Er-Telecom (AS9049)
remarks:        03 - Novotelecom (AS31200)
remarks:        04 - OmskTranzitTelecom (AS47246)
remarks:        05 - Pleksor-Telecom (AS56957)
remarks:        06 - Tomica (AS49414)
remarks:        99 - All Peers
remarks:        
remarks:        A - action:
remarks:        
remarks:        0 - don't announce prefix
remarks:        1 - announce with one prepend
remarks:        2 - announce with two times prepend
remarks:        3 - announce with three times prepend
remarks:        
remarks:        
admin-c:        DVV20-RIPE
tech-c:         ZTTK-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         TRANSTELECOM-MNT
mnt-by:         ZSTTK-MNT
created:        2002-08-01T05:43:11Z
last-modified:  2025-07-22T04:24:06Z
source:         RIPE
% 430 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/21127

const res = await fetch('https://ip-fd.net/api/v1/asn/21127', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/21127', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/21127');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/21127", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS30871	Municipalnoe kazennoe uchrezhdenie goroda Novosibirska "Hozyaistvennoe upravlenie" MUNIC
AS31364	Joint Stock Company TransTeleCom INTELBI-AS
AS42323	Limited Liability Company "TTK-Svyaz" CONNECT-AS
AS42408	Transvyaz-N LLC TSV-AS
AS47530	Novokuznetsk Telecom Ltd NVTC-AS
AS51256	JSC "Special Economic Zone of Technology-Innovative Type "Tomsk" OEZ-AS
AS58008	Service Desk Ltd. ASRUSHOLOD
AS198021	LLC "Business Alliance" BA-NSK-AS