Autonomous system
AS38592 CTGONLINE-AS-AP Chittagong Online Limited AS38592 AP
Residential APNIC
Summary
Chittagong Online Limited
residential isp fiber bangladesh
The AS handle CTGONLINE-AS-AP is held by Chittagong Online Limited.
What it's used for
- The address space carries residential fiber broadband traffic, as indicated by the netnames
CTGONLINENETandCTGONLINE-BDassociated with Chittagong Online Limited. - The AS announces 9,216 IPv4 addresses across 6 prefixes and 17 IPv6 prefixes, while maintaining only 3 observed routing neighbours. This high address-to-neighbour ratio is characteristic of an access network serving end-user subscribers rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs accessing the internet via fiber broadband services provided by Chittagong Online Limited in Bangladesh.
Notable
- Registrants for the majority of prefixes align with the announcer, listing Chittagong Online Limited as the holder for
101.2.160.0/21,202.65.168.0/21,103.5.232.0/22,163.47.84.0/22, and203.80.188.0/22. - The prefix
119.10.168.0/21is registered to APNIC Hostmaster with the netnameAPNIC-AP, distinguishing it from the other blocks which are directly registered to the operator. - The inventory consists of six distinct IPv4 blocks and a subdivided IPv6 range under
2402:2300::/36.
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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Internet Service Providers Association of Bangladesh | Dhaka, Bangladesh | 103.161.217.205 |
| Bangladesh Internet Exchange | Dhaka, Bangladesh | 103.151.196.99 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 9.22K addresses IPv6 17 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BD | Bangladesh | 23 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS38592- Registry name
- CTGONLINE-AS-AP
- Registrant
- Chittagong Online Limited.
- Abuse contact
- irt@colbd.com
- Registered
- 2008-09-04
- Last changed
- 2020-06-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 48 valid, 0 with no ROA
- ROAs
- 17 authorising AS38592
- ASPA
- no ASPA record
- IRR
- 100% registered · 48 of 48 announcements
- Route objects
- 118 naming AS38592
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 442 networks and 1,779 prefixes, as published 2026-10-24. 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