`staging3.usender.su`

DNSSEC	⚠️ Not signed
A	82.202.160.52^{🇷🇺 RU-JSCIOT82.202.160.0/23}
		PTR	`staging3.usender.su`
MX	`staging3.usender.su` ⭐
		A	82.202.160.52^{🇷🇺 RU-JSCIOT82.202.160.0/23}
			PTR	`staging3.usender.su`
TXT	`v=spf1 a mx ptr ip4:82.146.57.219 ~all`

`usender.su`

	DNSSEC	⚠️ Not signed
	A	62.109.31.96^{🇷🇺 RU-JSCIOT62.109.28.0/22}
	NS	`a.ns.selectel.ru` ⭐
	NS	`b.ns.selectel.ru`
	NS	`c.ns.selectel.ru`
	NS	`d.ns.selectel.ru`
	TXT	`_globalsign-domain-verification=gu_w2NJ_6pgq22RikolQaUkaHoguMbnJBOBYGA6YuE`
	TXT	`_globalsign-domain-verification=mYRjblXNxkZClI52N2fsJEajoq6G0c1qZEFO8-I437`
	TXT	`mailru-verification: e3a0129455890abd`
	TXT	`_globalsign-domain-verification=s0mGrf7y5TSnE5rBvbJLzk_CFK59BEUznzePH6-rrk`
	TXT	`google-site-verification=oFGt0UA8Ll9sQ9v9mLsxfX0uq5tnuBoUexpQvVOl6Fc`
	TXT	`_globalsign-domain-verification=D9RPWnbPKqV1ukKnT_9v5wJ6MzLfezUW9s5hsFhK0E`
	SOA	`a.ns.selectel.ru`support@selectel.ru 2026-05-13 #1

📈 Tranco rank: #654,776

PTR for

52.160.202.82.in-addr.arpa

MX for

staging3.usender.su

DNS History

2 records (2 active, 0 former)

●MXstaging3.usender.su2026-03-01 → 2026-05-13 · 2 obs

● 2026-03-01 19:36:26
● 2026-05-13 14:42:34

●A82.202.160.522026-03-01 → 2026-05-13 · 2 obs

● 2026-03-01 19:36:26
● 2026-05-13 14:42:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...	10 records
usender.su	c.ns.selectel.ru, b.ns.selectel.ru, a.ns.selectel.ru, d.ns.selectel.ru	-

✅ Authoritative Response

Server:188.68.203.3

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usender.su (unsigned zone)

⏱️ Timing

Total: 1356ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`82.202.160.52`
MX	1	`staging3.usender.su (pri: 0)`
TXT	1	`v=spf1 a mx ptr ip4:82.146.57.219 ~all`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...)

Analysis

Mail Server Role

staging3.usender.su serves as the mail server for staging3.usender.su.

IP Addresses

staging3.usender.su resolves to a single IP address: 82.202.160.52.

Mail Servers

A single mail server handles staging3.usender.su.

staging3.usender.su points to a single IP: 82.202.160.52.

staging3.usender.su - robtex.com