`mx1.tel-core.ru`

DNSSEC	⚠️ Not signed
A	31.129.45.55^{🇺🇸 SELECTEL31.129.44.0/23 Selectel Route Object}
		PTR	`mail.tel-core.ru`

`tel-core.ru`

	DNSSEC	⚠️ Not signed
	A	176.57.67.244^{🇧🇦 DDOS-GUARD176.57.67.0/24}
	NS	`a.ns.selectel.ru` ⭐
	NS	`b.ns.selectel.ru`
	NS	`c.ns.selectel.ru`
	NS	`d.ns.selectel.ru`
	MX	`mx1.tel-core.ru` ⭐
	TXT	`v=spf1 ip4:94.26.237.187 include:spf.mai l.selcloud.ru include:nicmail.ru ~all`
	TXT	`8f1ef8c2-835a-4728-acf8-69e3d5f15e27`
	TXT	`_globalsign-domain-verification=rpQZ4GCP pp-XRppL3-dnir5-H8As4T1HhY-wyry1RD`
	SOA	`a.ns.selectel.ru`support@selectel.ru 2026-04-01 #2

📈 Tranco rank: #468,077

MX for

tel-core.ru

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DNS History

1 record (1 active, 0 former)

●A31.129.45.552026-03-28 → 2026-04-12 · 2 obs

● 2026-03-28 20:56:56
● 2026-04-12 17:23:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net...	-
tel-core.ru	d.ns.selectel.ru, c.ns.selectel.ru, a.ns.selectel.ru, b.ns.selectel.ru	4 records

✅ Authoritative Response

Server:188.68.203.3

NS records: d.ns.selectel.ru, c.ns.selectel.ru, a.ns.selectel.ru, b.ns.selectel.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tel-core.ru (unsigned zone)

⏱️ Timing

Total: 844ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.129.45.55`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (d.ns.selectel.ru, c.ns.selectel.ru, b.ns.selectel.ru...)

Analysis

Mail Server Role

mx1.tel-core.ru acts as a mail server for tel-core.ru.

IP Addresses

mx1.tel-core.ru points to a single IP number: 31.129.45.55.

mx1.tel-core.ru - robtex.com

mx1.tel-core.ru

tel-core.ru