Autonomous system
AS45588 BTCL-ISP-AS Bangladesh Telecommunications Company Limited BTCL, Nationwide PSTN Operator and Data and Internet Service Provider.
Unclassified RIPE Cable/DSL/ISP
Summary
Bangladesh Telecommunications Company Limited
telecom residential isp government
BTCL-ISP-AS is operated by Bangladesh Telecommunications Company Limited (BTCL).
What it's used for
- The address space carries fixed-line and broadband subscriber traffic, evidenced by netnames
BTTB-BDandBTCL-Infobahan-Projectand reverse DNS records pointing toip.atbtcl.net.bd. - With 42,752 IPv4 addresses announced across 62 prefixes and 18 observed neighbours, the high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.
- As the largest government-owned telecommunications company in Bangladesh, this AS carries traffic for fixed-line telephone, DSL, and cable internet subscribers across the country.
Notable
- Registrants consistently identify as
Bangladesh Telegraph & Telephone Board(BTTB), the predecessor name to BTCL, confirming the AS belongs to the same government entity. - BTCL was founded as the Bangladesh Telegraph & Telephone Board and was later renamed to Bangladesh Telecommunications Company Limited, with 100% government ownership.
- The inventory includes both legacy
114.130.0.0/16space and newer180.211.0.0/16allocations, with IPv6 prefixes in the2407:5000::/32range.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 15 downstream and 18 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS17494 | Telecom Operator & Internet Service Provider as well | 6,840 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 62 prefixes · 42.75K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BD | Bangladesh | 66 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS45588- Registry name
- BTCL-ISP-AS
- Registrant
- Bangladesh Telegraph & Telephone Board
- Abuse contact
- uzzal18@gmail.com
- Registered
- 2015-10-20
- Last changed
- 2021-01-18
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Bangladesh Telecommunication Company Limited(BTCL)
- Network type
- Cable/DSL/ISP
- Scope
- Asia Pacific
- Traffic ratio
- Heavy Inbound
- Peering policy
- Selective
- Website
- http://www.btcl.com.bd
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 118 valid, 0 with no ROA
- ROAs
- 10 authorising AS45588
- ASPA
- no ASPA record
- IRR
- 100% registered · 118 of 118 announcements
- Route objects
- 1,119 naming AS45588
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere