`math.bas.bg`

DNSSEC	⚠️ Not signed
NS	`ns.math.bas.bg` ⭐ ⚠️ Not in parent delegation
		A	213.191.194.2^{🇧🇬 AS-BG-BAS213.191.192.0/19 BASNET Bulgarian Academy of Sciences}
NS	`argo.bas.bg` ⚠️ Not in parent delegation
		A	2a01:8880:224::7^{🇧🇬 AS-BG-BAS2a01:8880::/32}
			PTR	`argo.bas.bg`
		A	195.96.224.7^{🇧🇬 AS-BG-BAS195.96.224.0/19 BASNET Bulgarian Academy of Sciences}
			PTR	`argo.bas.bg`
MX	`math-bas-bg.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::7^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::e^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db8pr02cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.15^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db6pr03cu00107.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
		A	52.101.73.19^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr04cu00803.inbound.protection.outlook.com`
TXT	`v=spf1 ip4:213.191.194.98 ip4:213.191.194.11 ip4:213.191.194.6 include:spf.pr...`
TXT	`atlassian-sending-domain-verification=5d407205-3cf8-48c1-942f-1e35a1be99d6`
TXT	`MS=ms46791263`
TXT	`atlassian-domain-verification=UYkjyzaGhU5MyMQ1iL56aV885C2R0s2pdHWvruW4L69fQ0R...`
SOA	`ns.math.bas.bg`argo@bas.bg 2026-03-13 #0

`bas.bg`

	DNSSEC	⚠️ Not signed
	A	213.191.221.71^{🇧🇬 AS-BG-BAS213.191.192.0/19 BASNET Bulgarian Academy of Sciences}
	NS	`ns1.bas.bg` ⭐
	NS	`ns.bas.bg`
	NS	`ns2.bas.bg`
	MX	`argo.bas.bg` ⭐
	MX	`pmx.bas.bg`⁽⁵⁰⁰⁾
	TXT	`MS=ms94473617`
	TXT	`google-site-verification=QNLiOclWd-wTrGRoBMc6N5_DIUD44cVMEV6RGqVwpp0`
	TXT	`v=spf1 ip4:195.96.224.7 ip4:213.191.199.12 ip4:213.191.199.14 ip4:195.96.224....`
	TXT	`MS=ms57774012`
	SOA	`ns.bas.bg`root@argo.bas.bg 2026-03-13 #0

WOT: SAFE (76/100)
rank #9880 globally
rank #3 in the tld
This domain name "bas.bg" belongs to the Bulgarian Academy of Sciences, a leading scientific institution in Bulgaria. It is used to provide information about the academy's research, events, publications, and other related activities. The website is primarily in Bulgarian, but some parts are also available in English. It serves as a portal for scientific communication and collaboration both nationally and internationally.WOT: SAFE (75/100)
📈 Tranco rank: #22,516

Subdomains

ltpass.math.bas.bg

sharoacademy.math.bas.bg

www.math.bas.bg

dc.math.bas.bg

cose.math.bas.bg

ns.math.bas.bg

routerartint.math.bas.bg

sonix.math.bas.bg

Same first word

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ahmt.dk

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tham.cz

DNS History

7 records (3 active, 4 former)

●NSargo.bas.bg2015-07-20 → 2026-03-28 · 21 obs

● 2015-07-20 23:51:54
● 2026-02-17 03:14:24
○ 2026-02-17 07:08:20
○ 2026-02-17 21:51:24
● 2026-02-18 03:32:32
● 2026-02-18 06:58:06
○ 2026-02-18 18:57:28
● 2026-02-20 07:00:16
● 2026-02-21 00:52:20
○ 2026-02-21 07:03:38
● 2026-02-21 12:44:54
● 2026-02-23 07:09:18
○ 2026-02-23 11:08:16
● 2026-02-24 07:33:24
● 2026-03-09 04:52:46
○ 2026-03-09 07:26:12
● 2026-03-11 05:41:08
● 2026-03-12 08:37:28
○ 2026-03-13 07:25:34
● 2026-03-15 07:22:16
● 2026-03-28 07:39:20

○NSnewns.math.bas.bg2026-02-17 → 2026-03-25 · 32 obs

○ 2026-02-16 10:31:00
● 2026-02-17 03:14:24
○ 2026-02-17 07:08:20
○ 2026-02-18 18:57:28
● 2026-02-20 07:00:16
● 2026-02-21 00:52:20
○ 2026-02-21 07:03:38
○ 2026-02-21 12:44:54
● 2026-02-21 21:31:28
○ 2026-02-22 06:59:32
○ 2026-02-23 11:08:16
● 2026-02-24 07:33:24
● 2026-02-24 11:56:56
○ 2026-02-25 17:21:58
○ 2026-02-26 07:31:44
● 2026-02-28 07:32:58
● 2026-03-03 07:23:24
○ 2026-03-05 07:41:06
● 2026-03-07 07:38:54
○ 2026-03-09 04:52:46
○ 2026-03-09 07:26:12
● 2026-03-11 05:41:08
○ 2026-03-11 07:22:48
● 2026-03-12 08:37:28
○ 2026-03-13 07:25:34
● 2026-03-15 07:22:16
○ 2026-03-16 04:53:04
○ 2026-03-17 22:29:46
● 2026-03-22 13:59:54
● 2026-03-25 14:11:00
○ 2026-03-27 02:13:52
○ 2026-03-28 07:39:20

●NSns.math.bas.bg2015-07-20 → 2026-03-28 · 2 obs

● 2015-07-20 23:51:54
● 2026-03-28 07:39:20

○MXexchange.math.bas.bg2015-07-20 → 2021-10-16 · 4 obs

● 2015-07-20 23:51:54
● 2021-10-16 00:45:04
○ 2026-02-16 10:31:00
○ 2026-03-28 07:39:20

●MXmath-bas-bg.mail.protection.outlook.com2026-02-16 → 2026-03-28 · 21 obs

○ 2021-10-16 00:45:04
● 2026-02-16 10:31:00
● 2026-02-18 03:32:32
○ 2026-02-18 06:58:06
● 2026-02-18 18:57:28
● 2026-02-22 06:59:32
○ 2026-02-23 03:06:14
● 2026-02-23 07:09:18
○ 2026-02-23 11:08:16
● 2026-02-24 07:33:24
● 2026-03-09 04:52:46
○ 2026-03-09 07:26:12
● 2026-03-11 05:41:08
● 2026-03-12 08:37:28
○ 2026-03-13 07:25:34
● 2026-03-15 07:22:16
○ 2026-03-16 04:53:04
● 2026-03-16 16:29:56
○ 2026-03-17 22:29:46
● 2026-03-22 13:59:54
● 2026-03-28 07:39:20

○A213.191.194.112015-07-20 → 2017-08-30 · 4 obs

● 2015-07-20 23:51:54
● 2017-08-30 18:34:12
○ 2021-10-16 00:45:04
○ 2026-03-28 07:39:20

○A213.191.194.62021-10-16 → 2026-03-25 · 25 obs

○ 2017-08-30 18:34:12
● 2021-10-16 00:45:04
● 2026-02-18 06:58:06
○ 2026-02-18 18:57:28
● 2026-02-20 07:00:16
● 2026-02-21 21:31:28
○ 2026-02-22 06:59:32
● 2026-02-23 03:06:14
● 2026-02-23 07:09:18
○ 2026-02-23 11:08:16
● 2026-02-24 07:33:24
● 2026-03-03 07:23:24
○ 2026-03-05 07:41:06
● 2026-03-07 07:38:54
○ 2026-03-09 04:52:46
○ 2026-03-09 07:26:12
● 2026-03-11 05:41:08
● 2026-03-12 08:37:28
○ 2026-03-13 07:25:34
● 2026-03-15 07:22:16
○ 2026-03-16 04:53:04
● 2026-03-16 16:29:56
● 2026-03-25 14:11:00
○ 2026-03-27 02:13:52
○ 2026-03-28 07:39:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
bg	a.nic.bg, b.nic.bg, c.nic.bg, d.nic.bg...	12 records
bas.bg	ns.bas.bg, ns1.bas.bg, ns2.bas.bg	3 records

✅ Authoritative Response

Server:195.96.224.7

NS records: ns.bas.bg, ns1.bas.bg, ns2.bas.bg

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bas.bg (unsigned zone)

⏱️ Timing

Total: 562ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.191.194.6`
NS	2	`argo.bas.bg, ns.math.bas.bg`
MX	1	`math-bas-bg.mail.protection.outlook.com`
TXT	4	`v=spf1 ip4:213.191.194.98 ip4:213.191.19, atlassian-sending-domain-verification=5d...`
SOA	1	`ns.math.bas.bg argo.bas.bg`

📌 Glue Records Collected

Total: 15

In-bailiwick: 15 (a.nic.bg, a.nic.bg, b.nic.bg...)

Analysis

Hierarchy

math.bas.bg is a parent of ltpass.math.bas.bg, sharoacademy.math.bas.bg, www.math.bas.bg, dc.math.bas.bg, cose.math.bas.bg and a few other host names.

Name Servers

math.bas.bg is delegated to two name servers: argo.bas.bg and ns.math.bas.bg.

math.bas.bg uses the same name server setup as other domains, for example 194.191.213.in-addr.arpa.

math.bas.bg at least partially shares name servers with other domains, for instance ihist.bas.bg, space.bas.bg, ipc.bas.bg, artstudies.bg and bio21.bas.bg.

These name servers are commonly used alongside ns2.bas.bg, ns1.bas.bg, server.ihist.bas.bg, ns2.evolink.net, home.lirex.net, eagle.cu.bas.bg, pronto.phys.bas.bg, dellta.inrne.bas.bg, dragon.inrne.bas.bg and ns.inrne.bas.bg.

Host names with two IP numbers:

argo.bas.bg points to 2a01:8880:224::7 and 195.96.224.7.

Host names with one IP number:

ns.math.bas.bg points to 213.191.194.2.

Mail Servers

math.bas.bg is handled by a single mail server, math-bas-bg.mail.protection.outlook.com.

Host name math-bas-bg.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::7, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::2, 2a01:111:f403:ca09::d, 52.101.68.15, 52.101.68.16, 52.101.73.12 and 52.101.73.19.

math.bas.bg - robtex.com

math.bas.bg

bas.bg