AS45588 Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.

Bangladesh BTCL-ISP-AS APNIC 112 IPv4 prefixes 6 IPv6 prefixes

IPv4 addresses

42,752

IPv6 /48 networks

771

RPKI

118 valid0 no ROA

Peers and downstreams

Holder

AS name: BTCL-ISP-AS
Description: Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.
Organisation: Bangladesh Telegraph & Telephone Board
Abuse contact: Not published
Assigned: 2008-12-28
Registered: 2015-10-20
Record last changed: 2021-01-18 01:59 UTC

114.130.128.0/24 114.130.129.0/24 114.130.130.0/24 114.130.131.0/24 114.130.132.0/22 114.130.136.0/24 114.130.137.0/24 114.130.138.0/24 114.130.139.0/24 114.130.140.0/24 114.130.141.0/24 114.130.142.0/24 114.130.143.0/24 114.130.144.0/22 114.130.148.0/22 114.130.152.0/22 114.130.152.0/24 114.130.155.0/24 114.130.156.0/24 114.130.157.0/24 114.130.158.0/24 114.130.159.0/24 114.130.160.0/24 114.130.161.0/24 114.130.162.0/24 114.130.164.0/24 114.130.165.0/24 114.130.166.0/24 114.130.168.0/24 114.130.169.0/24 114.130.171.0/24 114.130.172.0/24 114.130.173.0/24 114.130.174.0/24 114.130.175.0/24 114.130.176.0/24 114.130.177.0/24 114.130.180.0/24 114.130.181.0/24 114.130.182.0/24 114.130.183.0/24 114.130.184.0/24 114.130.185.0/24 114.130.186.0/24 114.130.187.0/24 114.130.188.0/24 114.130.189.0/24 114.130.190.0/24 114.130.191.0/24 180.211.128.0/19 180.211.129.0/24 180.211.134.0/24 180.211.135.0/24 180.211.137.0/24 180.211.141.0/24 180.211.142.0/24 180.211.143.0/24 180.211.144.0/24 180.211.145.0/24 180.211.146.0/24 180.211.147.0/24 180.211.152.0/24 180.211.153.0/24 180.211.154.0/24 180.211.156.0/24 180.211.159.0/24 180.211.160.0/19 180.211.161.0/24 180.211.162.0/24 180.211.173.0/24 180.211.181.0/24 180.211.186.0/24 180.211.187.0/24 180.211.191.0/24 180.211.192.0/21 180.211.192.0/24 180.211.193.0/24 180.211.195.0/24 180.211.196.0/24 180.211.197.0/24 180.211.199.0/24 180.211.205.0/24 180.211.207.0/24 180.211.210.0/24 180.211.211.0/24 180.211.214.0/24 180.211.215.0/24 180.211.219.0/24 180.211.227.0/24 180.211.228.0/24 180.211.232.0/24 180.211.233.0/24 180.211.237.0/24 180.211.238.0/24 180.211.239.0/24 180.211.243.0/24 180.211.247.0/24 180.211.248.0/21 180.211.248.0/24 180.211.249.0/24 180.211.250.0/24 180.211.254.0/24 180.211.255.0/24 203.112.200.0/22 203.112.206.0/24 203.112.209.0/24 203.112.210.0/24 203.112.211.0/24 203.112.212.0/22 203.112.213.0/24 203.112.214.0/24 203.112.215.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 80/100

pass	Prefixes covered by valid ROAs 118 of 118 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 6 IPv6 prefixes.	15/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact uzzal18@gmail.com 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
fail	Registry record maintained Last changed 2021-01-18.	0/5

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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HTML

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Markdown

[![AS45588 network health](https://ip-fd.net/badge/asn/45588/health.svg)](https://ip-fd.net/asn/45588)

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

Routing changes

Last 30 days

2026-10-04 23:13 UTC	Neighbour gone	AS139807	downstream
2026-10-04 23:13 UTC	Neighbour gone	AS63843	downstream

WHOIS

aut-num:        AS45588
as-name:        BTCL-ISP-AS
handle:         AS45588
remarks:        Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.
technical:      SR42-AP (Sayedur Rahman) <sayed@bttb.net.bd>
administrative: HA128-AP (Habibur Rahman AKM) <detelex@btcl.net.bd>
technical:      MR209-AP (Mohammad Atiqur Rahman) <atique05@btcl.net.bd>
technical:      RM324-AP (Ruhul Quddus Mohammad) <rumi@bttb.net.bd>
abuse:          IRT-BTTB-BD (IRT-BTTB-BD) <uzzal18@gmail.com>
registrant:     ORG-BTTB1-AP (Bangladesh Telegraph & Telephone Board) <md@btcl.com.bd>
registration:   2015-10-20T04:24:48Z
last changed:   2021-01-18T01:59:51Z
source:         APNIC (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from APNIC RDAP

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/45588

const res = await fetch('https://ip-fd.net/api/v1/asn/45588', {
  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/45588', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/45588');
curl_setopt($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/45588", 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))

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