rtc.bt - dns.ninja

`rtc.bt`

DNSSEC	⚠️ Not signed
A	220.158.236.243^{🇧🇹 GTA-AS-AP220.158.236.0/23 DrukREN Druk Research and Education Network}
NS	`ns1.druknet.bt` ⭐
		A	2405:d000:0:100::200^{🇧🇹 BTTELECOM-AS-AP2405:d000::/33 DRUKNET-IPV6-BLOCK1}
			PTR	`chelela.druknet.bt`
		A	202.144.128.200^{🇧🇹 BTTELECOM-AS-AP202.144.128.0/20 DRUKNET-BLOCK-A1}
			PTR	`chelela.druknet.bt`
NS	`ns2.druknet.bt`
		A	2405:d000:0:100::210^{🇧🇹 BTTELECOM-AS-AP2405:d000::/33 DRUKNET-IPV6-BLOCK1}
			PTR	`pelela.druknet.bt`
		A	202.144.128.210^{🇧🇹 BTTELECOM-AS-AP202.144.128.0/20 DRUKNET-BLOCK-A1}
			PTR	`pelela.druknet.bt`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f26.1e100.net`
		A	142.250.31.27^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`MS=BEF7CC5F02ADE5302427128CD7381AE35DE51CE2`
TXT	`ZOOM_verify_IQAGEGoSQsG0UIDS8jaUHg`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`ns1.druknet.bt`hostmaster@druknet.bt 2026-05-13 #0

`bt`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.druknet.bt` ⭐
	NS	`auth00.ns.uu.net` ⚠️ Not in parent delegation
	NS	`auth61.ns.uu.net` ⚠️ Not in parent delegation
	NS	`ns.itu.ch` ⚠️ Not in parent delegation
	NS	`ns2.druknet.bt`
	NS	`ns3.druknet.bt`
	NS	`phloem.uoregon.edu` ⚠️ Not in parent delegation
	SOA	`ns1.druknet.bt`hostmaster@druknet.bt 2026-08-04 #55

rank #836534 globally
rank #32 in the tld
📈 Tranco rank: #982,667

Subdomains

library.rtc.bt

results.rtc.bt

mail.rtc.bt

admission.rtc.bt

www.rtc.bt

Same first word

rtc.eu

rtc.net.au

rtc.cloud

rtc.tv

rtc.expert

rtc.guru

rtc.ie

rtc.com.pl

rtc.education

rtc.london

rtc.cv

rtc.no-ip.org

rtc.li

rtc.pt

rtc.edu

rtc.pl

rtc.coop

rtc.co.za

rtc.hr

rtc.cc

rtc.bt

rtc.email

rtc.sg

rtc.cz

rtc.world

rtc.spb.ru

rtc.fi

rtc.berlin

rtc.lu

rtc.okinawa

rtc.edu.ge

rtc.directory

rtc.ru

rtc.sc

rtc.nl

rtc.exchange

rtc.lv

rtc.org.uk

rtc.si

rtc.systems

rtc.su

rtc.edu.vn

rtc.casino

rtc.org

rtc.be

rtc.kz

rtc.ac.th

rtc.no

rtc.net.br

rtc.services

rtc.com.sg

rtc.ro

rtc.jp

rtc.taxi

rtc.nyc

rtc.consulting

rtc.hu

rtc.co.nz

rtc.at

rtc.it

rtc.cl

rtc.com.br

rtc.se

rtc.solutions

rtc.net

rtc.ly

rtc.rs

rtc.fr

rtc.gob.mx

rtc.lt

rtc.com.pk

rtc.com.tw

rtc.bg

rtc.com.au

rtc.co.th

rtc.com.ua

rtc.co.uk

rtc.or.kr

rtc.synology.me

rtc.uk.net

rtc.com.tr

rtc.travel

rtc.la

rtc.org.au

rtc.es

rtc.com

rtc.co

rtc.mx

Similar names

crt.club

crt.biz

crt.rocks

ctr.at

rct.studio

ctr.com.my

trc.org.sg

trc.com.my

crt.it

rct.ro

tcr.com

tcr.ir

trc.be

trc.li

trc.network

ctr.com.tw

crt.co.za

rct.info

rct.com

tcr.properties

ctr.as

rct.nyc

crt.hn

tcr.it

trc.kr

tcr.casino

ctr.be

rct.de

tcr.es

trc.es

ctr.com.mx

ctr.ca

crt.ie

trc.fi

trc.co.th

ctr.canva-apps.cn

crt.de

tcr.nu

rct.us

trc.co.jp

crt.services

trc.cz

trc.world

ctr.cl

trc.kz

rct.ba

rct.ir

rct.dk

ctr.cz

ctr.id

tcr.ch

tcr.company

crt.money

tcr.edu

rct.coop

tcr.construction

trc.cm

rct.co.za

trc.ae

crt.fr

tcr.biz

trc.dk

rct.net

ctr.se

crt.bz

ctr.sh

rct.co.in

rct.it

rct.eu

tcr.link

tcr.us

ctr.su

trc.net

rct.com.ar

rct.co.uk

tcr.com.sg

tcr.homeunix.com

ctr.kz

rct.lv

DNS History

10 records (8 active, 2 former)

●NSns1.druknet.bt2015-08-21 → 2026-08-09 · 2 obs

● 2015-08-21 03:02:28
● 2026-08-09 22:42:48

●NSns2.druknet.bt2015-08-21 → 2026-08-09 · 27 obs

● 2015-08-21 03:02:28
● 2026-02-14 18:47:04
○ 2026-02-22 20:10:22
● 2026-03-07 19:07:00
● 2026-03-10 00:51:12
○ 2026-03-10 17:42:44
● 2026-03-11 02:13:38
● 2026-04-06 05:20:50
○ 2026-04-06 09:10:16
● 2026-04-06 18:14:08
● 2026-04-09 11:24:22
○ 2026-04-10 18:48:50
● 2026-04-11 11:49:28
● 2026-04-12 08:50:48
○ 2026-04-16 15:22:50
○ 2026-04-28 05:02:12
● 2026-04-28 13:38:32
● 2026-05-13 16:34:34
○ 2026-05-22 15:39:54
● 2026-05-24 15:16:28
○ 2026-07-11 09:24:54
● 2026-07-11 23:34:30
○ 2026-07-14 17:48:40
● 2026-07-16 00:14:32
○ 2026-07-17 00:56:54
● 2026-07-25 18:58:14
● 2026-08-09 22:42:48

●MXalt1.aspmx.l.google.com2015-08-21 → 2026-08-09 · 39 obs

● 2015-08-21 03:02:28
● 2026-03-10 17:42:44
○ 2026-03-11 02:13:38
● 2026-03-12 06:21:56
● 2026-03-21 02:03:04
○ 2026-03-23 17:35:46
○ 2026-03-24 19:10:14
● 2026-04-03 19:02:06
● 2026-04-04 11:16:18
○ 2026-04-06 05:20:50
● 2026-04-06 09:10:16
● 2026-04-06 18:14:08
○ 2026-04-06 19:47:50
● 2026-04-07 12:56:18
○ 2026-04-07 21:02:26
● 2026-04-08 15:12:40
● 2026-04-16 15:22:50
○ 2026-04-21 23:22:34
○ 2026-04-28 05:02:12
● 2026-04-28 13:38:32
● 2026-05-13 16:34:34
○ 2026-05-22 15:39:54
● 2026-05-24 15:16:28
○ 2026-05-25 15:46:54
● 2026-05-26 07:53:18
● 2026-05-26 16:44:44
○ 2026-05-27 20:19:36
● 2026-05-28 22:59:44
● 2026-06-02 08:05:00
○ 2026-06-05 21:45:06
○ 2026-06-07 21:43:06
● 2026-06-14 02:39:10
○ 2026-07-13 02:03:04
● 2026-07-14 17:48:40
○ 2026-07-17 12:33:56
● 2026-07-25 18:58:14
○ 2026-07-26 16:41:58
● 2026-08-09 22:42:46
● 2026-08-09 22:42:48

●MXalt2.aspmx.l.google.com2015-08-21 → 2026-08-09 · 39 obs

●MXalt3.aspmx.l.google.com2015-08-21 → 2026-08-09 · 39 obs

●MXalt4.aspmx.l.google.com2015-08-21 → 2026-08-09 · 39 obs

●MXaspmx.l.google.com2015-08-21 → 2026-08-09 · 39 obs

○A202.144.133.562015-08-21 → 2015-09-26 · 4 obs

● 2015-08-21 03:02:28
● 2015-09-26 01:33:28
○ 2015-10-04 06:03:40
○ 2026-08-09 22:42:48

○A202.144.148.1792015-10-04 → 2018-09-23 · 5 obs

○ 2015-09-26 01:33:28
● 2015-10-04 06:03:40
● 2018-09-23 13:02:42
○ 2021-01-04 20:12:02
○ 2026-08-09 22:42:48

●A220.158.236.2432021-01-04 → 2026-08-09 · 38 obs

○ 2018-09-23 13:02:42
● 2021-01-04 20:12:02
● 2026-03-10 00:51:12
○ 2026-03-10 17:42:44
● 2026-03-11 02:13:38
○ 2026-03-12 06:21:56
○ 2026-03-20 21:42:10
● 2026-03-21 02:03:04
● 2026-04-04 11:16:18
○ 2026-04-06 05:20:50
● 2026-04-06 09:10:16
● 2026-04-07 21:02:26
○ 2026-04-08 15:12:40
● 2026-04-09 09:23:10
● 2026-04-16 15:22:50
○ 2026-04-21 23:22:34
○ 2026-04-28 05:02:12
● 2026-04-28 13:38:32
● 2026-05-13 16:34:34
○ 2026-05-22 15:39:54
● 2026-05-24 15:16:28
● 2026-05-26 16:44:44
○ 2026-05-27 20:19:36
○ 2026-05-28 22:59:44
● 2026-05-29 10:36:18
● 2026-06-02 08:05:00
○ 2026-06-05 21:45:06
● 2026-06-06 15:40:38
○ 2026-06-07 21:43:06
○ 2026-06-14 02:39:10
● 2026-06-14 13:41:02
○ 2026-07-08 10:19:12
● 2026-07-08 23:09:46
○ 2026-07-14 17:48:40
● 2026-07-17 00:56:54
○ 2026-07-26 16:41:58
● 2026-08-09 22:42:46
● 2026-08-09 22:42:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
bt	ns.itu.ch, ns1.druknet.bt, ns2.druknet.bt, ns3.druknet.bt...	12 records
rtc.bt	ns1.druknet.bt, ns2.druknet.bt	4 records

✅ Authoritative Response

Server:202.144.128.200

NS records: ns1.druknet.bt, ns2.druknet.bt

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtc.bt (unsigned zone)

⏱️ Timing

Total: 1191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`220.158.236.243`
NS	2	`ns2.druknet.bt, ns1.druknet.bt`
MX	5	`ALT4.ASPMX.L.GOOGLE.COM (pri: 10), ASPMX.L.GOOGLE.COM (pri: 1)...`
TXT	3	`v=spf1 include:_spf.google.com ~all, MS=BEF7CC5F02ADE5302427128CD7381AE35DE51...`
SOA	1	`ns1.druknet.bt hostmaster.druknet.bt`

📌 Glue Records Collected

Total: 16

In-bailiwick: 6 (ns1.druknet.bt, ns1.druknet.bt, ns2.druknet.bt...)

Out-of-bailiwick: 10 (ns.itu.ch, ns.itu.ch, auth00.ns.uu.net...)

Analysis

Hierarchy

The domain rtc.bt serves as parent to library.rtc.bt, results.rtc.bt, mail.rtc.bt, admission.rtc.bt and www.rtc.bt.

IP Addresses

rtc.bt directs to one IP number, which is 220.158.236.243.

Other host names, such as www.rtc.bt, share IP numbers with rtc.bt.

Name Servers

rtc.bt is delegated to two name servers: ns1.druknet.bt and ns2.druknet.bt.

rtc.bt has the same name server delegation as a number of other domains, such as 135.144.202.in-addr.arpa, 111.2.119.in-addr.arpa, shss.edu.bt and two more.

At least some of rtc.bt's name servers are shared with other domains, for example sce.edu.bt, cst.edu.bt, bhutansojourner.bt and two more.

ns1.druknet.bt and ns2.druknet.bt each resolve to two IP addresses: ns1.druknet.bt points to 202.144.128.200 and 2405:d000:0:100::200, while ns2.druknet.bt points to 202.144.128.210 and 2405:d000:0:100::210.

Mail Servers

Five mail servers handle rtc.bt: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

rtc.bt shares at least some of its mail servers with other domains — for example ns500821.ns500794.ns500821.ns500794.ns500821.ns500794.ns500794.ns500821.ns500794.ns500794.ns500821.ns500821.ns500795.ns500795.ns500790.ns500795.lustypartnersfinder.com, ns500768.ns500698.ns500698.ns500735.ns500736.ns500698.ns500735.ns500735.ns500576.ns500708.ns500619.ns500576.trackreceptor.com, ns500731.ns500671.ns500754.ns500688.ns500705.ns500671.ns500705.ns500688.ns500678.ns500291.ns500291.ns500291.ns500131.lustychickser.com and two more.

It is common for these mail servers to co-occur with alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

aspmx.l.google.com points to 142.250.31.27 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com points to 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com points to 172.253.157.27 and 2a00:1450:400c:c23::1a.