123.49.0.0/18

AS17494 · Telecom Operator & Internet Service Provider as well

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Summary

Country	Bangladesh
Domain	bttb.net
ASN	AS17494
Registry	APNIC
ID	BTTB

WHOIS Details

inetnum:        123.49.0.0 - 123.49.63.255
netname:        BTTB
descr:          BTTB,
descr:          Mogbazar, Dhaka, Bangladesh
country:        BD
org:            ORG-BTTB1-AP
admin-c:        HA128-AP
tech-c:         MR209-AP
abuse-c:        AB1235-AP
status:         ALLOCATED PORTABLE
remarks:        ----------------------------------------------------------
remarks:        This object can only be modified by APNIC hostmaster
remarks:        If you wish to modify this object details please
remarks:        send email to hostmaster@apnic.net with your organisation
remarks:        account name in the subject line.
remarks:        ----------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-BD-BTTB
mnt-routes:     MAINT-BD-BTTB
mnt-irt:        IRT-BTTB-BD
last-modified:  2021-01-18T01:59:47Z
source:         APNIC

irt:            IRT-BTTB-BD
address:        Data and Internet Service
address:        Bangladesh Telecommunications Company Ltd
address:        Moghbazar Telephone Bhaban, Dhaka
address:        
address:        
e-mail:         uzzal18@gmail.com
abuse-mailbox:  irt@btcl.gov.bd
admin-c:        HA128-AP
tech-c:         MR209-AP
auth:           # Filtered
remarks:        uzzal18@gmail.comd
remarks:        irt@btcl.cov.bd
remarks:        uzzal18@btcl.gov.bd
remarks:        uzzal18@gmail.com was validated on 2025-07-29
remarks:        irt@btcl.gov.bd is invalid
mnt-by:         MAINT-BD-BTTB
last-modified:  2025-11-18T00:26:38Z
source:         APNIC

organisation:   ORG-BTTB1-AP
org-name:       Bangladesh Telegraph & Telephone Board
org-type:       LIR
country:        BD
address:        Telejogajog Bhaban
address:        37/E, Eskaton Garden
phone:          +880-2-8311500
fax-no:         +880-2-9320002
e-mail:         md@btcl.com.bd
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:44Z
source:         APNIC

role:           ABUSE BTTBBD
country:        ZZ
address:        Data and Internet Service
address:        Bangladesh Telecommunications Company Ltd
address:        Moghbazar Telephone Bhaban, Dhaka
address:        
address:        
phone:          +000000000
e-mail:         uzzal18@gmail.com
admin-c:        HA128-AP
tech-c:         MR209-AP
nic-hdl:        AB1235-AP
remarks:        Generated from irt object IRT-BTTB-BD
remarks:        uzzal18@gmail.com was validated on 2025-07-29
remarks:        irt@btcl.gov.bd is invalid
abuse-mailbox:  irt@btcl.gov.bd
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-13T13:08:24Z
source:         APNIC

person:         Habibur Rahman AKM
nic-hdl:        HA128-AP
e-mail:         detelex@btcl.net.bd
address:        Data and Internet Service
address:        Bangladesh Telecommunications Company Ltd
address:        Moghbazar Telephone Bhaban, Dhaka
phone:          +880-1550151169
fax-no:         +880-2-8360699
country:        BD
mnt-by:         MAINT-BD-BTTB
last-modified:  2008-10-07T08:11:52Z
source:         APNIC

person:         Mohammad Atiqur Rahman
address:        Mogbazar Telephone Bhaban,
address:        Mogbazar, Dhaka
address:        Bangladesh
country:        BD
phone:          +880-1819550327
fax-no:         +880-2-9344455
e-mail:         atique05@btcl.net.bd
nic-hdl:        MR209-AP
mnt-by:         MAINT-BD-BTTB
last-modified:  2008-10-08T03:29:52Z
source:         APNIC

route:          123.49.0.0/18
descr:          Bangladesh Telecommunications Company Ltd. (BTCL)
origin:         AS17494
country:        BD
mnt-by:         MAINT-BD-BTTB
last-modified:  2015-10-19T05:53:52Z
source:         APNIC

route:          123.49.0.0/18
origin:         AS45588
descr:          Bangladesh Telegraph & Telephone Board Telejogajog Bhaban 37/E, Eskaton Garden
mnt-by:         MAINT-BD-BTTB
last-modified:  2019-11-12T05:27:29Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 123.49.0.0/18

Range	ASN	Company	Num of IPs
123.49.51.0/24	AS17494	ISP interfaces with BTCL	256
123.49.47.0/24	AS17494	BTCL Dhaka government office network address	256
123.49.50.0/24	AS17494	ISP interfaces with BTCL	256
123.49.52.0/24	AS17494	Non ISP Internet Customrs' interfaces with BTCL	256
123.49.53.0/24	AS17494	BTCL interface with its Fixed Intelligent Network	256
123.49.60.0/24	AS17494	Interface for the BTCL Internet customers connected through DDN	256
123.49.43.0/24	AS23876	BTCL Dhaka government office network address	256

Nearby Ranges

BGP prefixes that overlap with 123.49.0.0/16

Range	ASN	Company	Num of IPs
123.49.47.0/24	AS17494	BTCL Dhaka government office network address	256
123.49.50.0/24	AS17494	ISP interfaces with BTCL	256
123.49.51.0/24	AS17494	ISP interfaces with BTCL	256
123.49.52.0/24	AS17494	Non ISP Internet Customrs' interfaces with BTCL	256
123.49.53.0/24	AS17494	BTCL interface with its Fixed Intelligent Network	256
123.49.60.0/24	AS17494	Interface for the BTCL Internet customers connected through DDN	256
123.49.43.0/24	AS23876	BTCL Dhaka government office network address	256

Hosted domains

There are 5,912 domain names hosted across 28 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
123.49.12.133	taxofficemanagement.gov.bd	5878
123.49.12.136	shokherpiran.com.bd	7
123.49.12.155	btcl.com.bd	3
123.49.3.254	iebdc.org	2
123.49.41.238	bpodms.gov.bd	1
123.49.12.131	xn--94bcy3esc8fb.xn--54b7fta0cc	1
123.49.37.154	passport.gov.bd	1
123.49.48.67	btcltelesheba.gov.bd	1
123.49.9.132	banglatext.com	1
123.49.12.146	btclwifihotspot.gov.bd	1
123.49.41.234	fiqc-scm.com	1
123.49.57.222	bdcourts.gov.bd	1
123.49.48.66	telesheba.gov.bd	1
123.49.57.220	supremecourt.gov.bd	1
123.49.59.109	pgcb.org.bd	1
123.49.37.153	visa.gov.bd	1
123.49.41.235	ekdak.com	1
123.49.9.131	atbtcl.net.bd	1
123.49.33.100	dwasacbs.com	1
123.49.48.98	btebcbt.gov.bd	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

1,225 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
123.49.61.65	AS17494 Telecom Operator & Internet Service Provider as well	`0.69ms` from Dhaka, BD
123.49.32.20	AS17494 Telecom Operator & Internet Service Provider as well	`0.63ms` from Dhaka, BD
123.49.0.65	AS17494 Telecom Operator & Internet Service Provider as well	`0.66ms` from Dhaka, BD
123.49.45.1	AS17494 Telecom Operator & Internet Service Provider as well	`0.55ms` from Dhaka, BD
123.49.48.70	AS17494 Telecom Operator & Internet Service Provider as well	`0.54ms` from Dhaka, BD
123.49.43.189	AS23876 Bangladesh National intenet exchange	`46.30ms` from Singapore, SG
123.49.44.52	AS17494 Telecom Operator & Internet Service Provider as well	`0.61ms` from Dhaka, BD
123.49.37.70	AS17494 Telecom Operator & Internet Service Provider as well	`0.72ms` from Dhaka, BD
123.49.54.240	AS17494 Telecom Operator & Internet Service Provider as well	`0.53ms` from Dhaka, BD
123.49.50.78	AS17494 Telecom Operator & Internet Service Provider as well	`0.51ms` from Dhaka, BD
123.49.56.255	AS45607 Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.	`0.40ms` from Dhaka, BD
123.49.49.14	AS17494 Telecom Operator & Internet Service Provider as well	`0.54ms` from Dhaka, BD
123.49.20.1	AS17494 Telecom Operator & Internet Service Provider as well	`8.14ms` from Kolkata, IN
123.49.39.113	AS17494 Telecom Operator & Internet Service Provider as well	`0.58ms` from Dhaka, BD
123.49.40.66	AS17494 Telecom Operator & Internet Service Provider as well	`0.54ms` from Dhaka, BD
123.49.1.216	AS17494 Telecom Operator & Internet Service Provider as well	`0.72ms` from Dhaka, BD
123.49.4.146	AS17494 Telecom Operator & Internet Service Provider as well	`0.54ms` from Dhaka, BD
123.49.19.29	AS17494 Telecom Operator & Internet Service Provider as well	`0.74ms` from Dhaka, BD
123.49.51.210	AS17494 Telecom Operator & Internet Service Provider as well	`0.58ms` from Dhaka, BD
123.49.34.17	AS17494 Telecom Operator & Internet Service Provider as well	`0.69ms` from Dhaka, BD
123.49.62.161	AS17494 Telecom Operator & Internet Service Provider as well	`0.55ms` from Dhaka, BD
123.49.12.112	AS17494 Telecom Operator & Internet Service Provider as well	`0.53ms` from Dhaka, BD
123.49.33.97	AS17494 Telecom Operator & Internet Service Provider as well	`0.59ms` from Dhaka, BD
123.49.60.254	AS17494 Telecom Operator & Internet Service Provider as well	`0.55ms` from Dhaka, BD
123.49.9.66	AS17494 Telecom Operator & Internet Service Provider as well	`0.43ms` from Singapore, SG

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
98.20.160.2	AS7029 Windstream Communications LLC	`5.51ms` from Atlanta, US
194.149.15.242	AS5588 T-Mobile Czech Republic a.s.	`1.36ms` from Budapest, HU
196.115.30.194	AS36925 MEDITELECOM	`6.89ms` from Casablanca, MA
74.219.126.226	AS10796 Charter Communications Inc	`6.97ms` from Flint, US
5.39.26.210	AS16276 OVH SAS	`0.07ms` from Gravelines, FR
94.244.155.82	AS136907 HUAWEI CLOUDS	`1.17ms` from Hong Kong, HK
70.39.30.146	AS5056 Aureon Network Services	`5.65ms` from Kansas City, US
94.14.129.18	AS5607 Sky UK Limited	`8.97ms` from London, GB
183.167.249.66	AS4134 CHINANET-BACKBONE	`9.69ms` from Nanchang, CN
93.216.164.2	AS3320 Deutsche Telekom AG	`3.92ms` from Nuernberg, DE
99.77.149.50	AS16509 Amazon.com, Inc.	`0.12ms` from Osasco, BR
54.209.125.162	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
209.90.87.194	AS5048 FIBERNET Corp.	`2.41ms` from Salt Lake City, US
173.220.244.98	AS6128 Cablevision Systems Corp.	`6.43ms` from Secaucus, US
79.167.16.178	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`5.01ms` from Sofia, BG
4.237.70.34	AS8075 Microsoft Corporation	`1.20ms` from Sydney, AU
36.227.126.146	AS3462 Data Communication Business Group	`1.20ms` from Taipei, TW
122.209.122.242	AS17506 ARTERIA Networks Corporation	`1.02ms` from Tokyo, JP
62.2.235.226	AS6730 Sunrise GmbH	`0.96ms` from Zuerich, CH
45.175.138.2	AS273965 NETIC COMUNICACIONES S.A.S.	`16.46ms` from Buenos Aires, AR
221.210.84.50	AS4837 CHINA UNICOM China169 Backbone	`14.13ms` from Changchun, CN
173.16.163.178	AS30036 Mediacom Communications Corp	`6.66ms` from Chicago, US
4.71.183.82	AS3356 Level 3 Parent, LLC	`0.64ms` from Chicago, US
98.222.127.178	AS7922 Comcast Cable Communications, LLC	`5.37ms` from Chicago, US
54.73.19.194	AS16509 Amazon.com, Inc.	`0.11ms` from Dublin, IE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 123.49.59.97

traceroute to 123.49.59.97 (123.49.59.97): 64 hops max, 52 byte packets

3 [] 103.161.216.92 1.074 ms

4 [AS17494] 123.49.59.97 0.679 ms

Measurement taken from

IPinfo ProbeNet in Dhaka, BD

On December 14th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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