`mail.promathematica.pl`

	DNSSEC	⚠️ Not signed
	A	64.29.17.65^{🇺🇸 Amazon64.29.17.0/24 EC2 Prefix}
	A	216.198.79.1^{🇺🇸 Amazon216.198.79.0/24 EC2 Prefix}

`promathematica.pl`

	DNSSEC	⚠️ Not signed
	A	64.29.17.1^{🇺🇸 Amazon64.29.17.0/24 EC2 Prefix}
	A	216.198.79.1^{🇺🇸 Amazon216.198.79.0/24 EC2 Prefix}
	NS	`ns1.vercel-dns.com` ⭐
	NS	`ns2.vercel-dns.com`
	SOA	`ns1.vercel-dns.com`hostmaster@nsone.net serial=1771882822

Previously MX for

promathematica.pl

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DNS History

4 records (2 active, 2 former)

●A216.198.79.12026-04-17 → 2026-05-12 · 2 obs

● 2026-04-17 19:50:50
● 2026-05-12 08:41:20

○A216.198.79.652026-04-17 → 2026-04-17 · 2 obs

● 2026-04-17 19:50:50
○ 2026-05-12 08:41:20

○A57.128.229.1662026-04-17 → 2026-05-12 · 2 obs

○ 2026-04-17 19:50:50
○ 2026-05-12 08:41:20

●A64.29.17.652026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-17 19:50:50
● 2026-05-12 08:41:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...	-
promathematica.pl	ns1.vercel-dns.com, ns2.vercel-dns.com	-

✅ Authoritative Response

Server:198.51.45.13

NS records: ns1.vercel-dns.com, ns2.vercel-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for promathematica.pl (unsigned zone)

⏱️ Timing

Total: 996ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`64.29.17.1, 216.198.79.1`

Analysis

IP Addresses

mail.promathematica.pl points to two IP numbers: 64.29.17.65 and 216.198.79.1.

Other host names, for instance knode.co.nz, norisushibar.no, premium-signals.com, sayarak.com and letshelpout.com share IP numbers with mail.promathematica.pl.

mail.promathematica.pl - robtex.com