`mathopenbank.org`

DNSSEC	⚠️ Not signed
A	185.54.136.137^{🇷🇺 MCCME-AS185.54.136.0/23 RU-MCCME-IPv4}
NS	`ns1.mccme.ru` ⭐
		A	185.54.136.65^{🇷🇺 MCCME-AS185.54.136.0/23 RU-MCCME-IPv4}
			PTR	`ns1.mccme.ru`
NS	`ns.mccme.ru`
		A	185.54.136.66^{🇷🇺 MCCME-AS185.54.136.0/23 RU-MCCME-IPv4}
			PTR	`marple.mccme.ru`
NS	`ns2.mccme.ru`
		A	83.149.227.106^{🇷🇺 niks83.149.192.0/18 NIKS network}
MX	`mx.mccme.ru` ⭐
		A	185.54.136.66^{🇷🇺 MCCME-AS185.54.136.0/23 RU-MCCME-IPv4}
			PTR	`marple.mccme.ru`
MX	`mx.mathopenbank.org`⁽²⁰⁾
		A	185.54.136.69^{🇷🇺 MCCME-AS185.54.136.0/23 RU-MCCME-IPv4}
			PTR	`watson.mccme.ru`
SOA	`ns.mccme.ru`hostmaster@mathopenbank.org 2017-07-10 #3

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1773551953

Subdomains

mx.mathopenbank.org

Same first word

mathopenbank.org

DNS History

10 records (6 active, 4 former)

○NScastle.mccme.ru2015-07-17 → 2016-02-24 · 4 obs

● 2015-07-17 10:20:42
● 2016-02-24 15:35:12
○ 2016-06-18 01:39:26
○ 2026-03-23 13:39:04

○NSmarple.mccme.ru2015-07-17 → 2016-02-24 · 4 obs

● 2015-07-17 10:20:42
● 2016-02-24 15:35:12
○ 2016-06-18 01:39:26
○ 2026-03-23 13:39:04

●NSns.mccme.ru2016-06-18 → 2026-03-23 · 3 obs

○ 2016-02-24 15:35:12
● 2016-06-18 01:39:26
● 2026-03-23 13:39:04

●NSns1.mccme.ru2016-06-18 → 2026-03-23 · 3 obs

○ 2016-02-24 15:35:12
● 2016-06-18 01:39:26
● 2026-03-23 13:39:04

●NSns2.mccme.ru2016-06-18 → 2026-03-23 · 3 obs

○ 2016-02-24 15:35:12
● 2016-06-18 01:39:26
● 2026-03-23 13:39:04

●MXmx.mathopenbank.org2020-02-02 → 2026-03-23 · 3 obs

○ 2017-01-24 17:17:50
● 2020-02-02 08:33:48
● 2026-03-23 13:39:04

●MXmx.mccme.ru2015-07-17 → 2026-03-23 · 2 obs

● 2015-07-17 10:20:42
● 2026-03-23 13:39:04

○MXmx1.mccme.ru2015-07-17 → 2017-01-24 · 4 obs

● 2015-07-17 10:20:42
● 2017-01-24 17:17:50
○ 2020-02-02 08:33:48
○ 2026-03-23 13:39:04

●A185.54.136.1372020-02-02 → 2026-03-23 · 3 obs

○ 2017-01-24 17:17:50
● 2020-02-02 08:33:48
● 2026-03-23 13:39:04

○A195.178.216.152015-07-17 → 2017-01-24 · 4 obs

● 2015-07-17 10:20:42
● 2017-01-24 17:17:50
○ 2020-02-02 08:33:48
○ 2026-03-23 13:39:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	d0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org	-
mathopenbank.org	ns1.mccme.ru, ns.mccme.ru, ns2.mccme.ru	-

✅ Authoritative Response

Server:185.54.136.65

NS records: ns1.mccme.ru, ns.mccme.ru, ns2.mccme.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathopenbank.org (unsigned zone)

⏱️ Timing

Total: 3933ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.54.136.137`
NS	3	`ns.mccme.ru, ns2.mccme.ru...`
MX	2	`mx.mathopenbank.org (pri: 20), mx.mccme.ru (pri: 10)`
SOA	1	`ns.mccme.ru hostmaster.mathopenbank.org`

Analysis

Hierarchy

The parent of mx.mathopenbank.org is mathopenbank.org.

IP Addresses

mathopenbank.org points to an IP address: 185.54.136.137.

other host names include kvantik.org, www.kvantik.com, www.kvantik.org, kvant.mccme.ru and kvantik.com; they share IP numbers with mathopenbank.org.

Name Servers

mathopenbank.org is delegated to three name servers ns1.mccme.ru, ns2.mccme.ru and ns.mccme.ru.

mathopenbank.org at least partially shares name servers with other domains, for instance kvantik.org, 1543.su, olimpiadakurchatov.ru, mcnmo.ru and chld.su.

These name servers are commonly used alongside marple.mccme.ru.

Host names with one IP:

ns1.mccme.ru points to 185.54.136.65; ns2.mccme.ru points to 83.149.227.106; ns.mccme.ru points to 185.54.136.66.

Mail Servers

mathopenbank.org is handled by two mail servers: mx.mathopenbank.org and mx.mccme.ru.

mathopenbank.org shares at least partially some mail servers with other domains, for instance mosolymp.ru, mccme.ru, olimpiada.ru, school9-11.ru and kvant.ras.ru.

these mail servers are commonly used together with mx1.mccme.ru.

Host names with one IP:

mx.mathopenbank.org points to: 185.54.136.69

mx.mccme.ru points to: 185.54.136.66

mathopenbank.org - robtex.com