`spamfilter.sk`

DNSSEC	⚠️ Not signed
A	91.228.166.47^{🇸🇰 ESET-AS91.228.166.0/24 ESET NET}
		PTR	`skh1-webredir01-v.eset.com`
A	91.228.167.128^{🇸🇰 ESET-AS91.228.167.0/24 ESET NET}
NS	`dns1.p04.nsone.net` ⭐ ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:4:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p04.nsone.net`
		A	198.51.44.4^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p04.nsone.net`
NS	`dns1.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p01.nsone.net`
NS	`dns2.p04.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:4::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p04.nsone.net`
		A	198.51.45.4^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p04.nsone.net`
NS	`dns3.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p01.nsone.net`
NS	`dns3.p04.nsone.net` ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:4:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p04.nsone.net`
		A	198.51.44.68^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p04.nsone.net`
NS	`dns4.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p01.nsone.net`
NS	`dns4.p04.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:4::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p04.nsone.net`
		A	198.51.45.68^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p04.nsone.net`
SOA	`dns1.p04.nsone.net`hostmaster@nsone.net serial=1738919971

`sk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`m.tld.sk` ⭐
	NS	`e.tld.sk`
	NS	`f.tld.sk`
	NS	`g.tld.sk`
	NS	`h.tld.sk`
	SOA	`m.tld.sk`hostmaster@sk-nic.sk serial=2018580850

Same first word

Similar names

DNS History

18 records (10 active, 8 former)

●NSdns1.p01.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns1.p04.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns2.p01.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns2.p04.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns3.p01.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns3.p04.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns4.p01.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●NSdns4.p04.nsone.net2026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

○NSns1.websupport.sk2015-08-22 → 2017-07-11 · 4 obs

● 2015-08-22 16:05:22
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

○NSns2.websupport.sk2015-08-22 → 2017-07-11 · 4 obs

● 2015-08-22 16:05:22
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

○NSns3.websupport.sk2015-08-22 → 2017-07-11 · 4 obs

● 2015-08-22 16:05:22
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

○MXmailin1.spamfilter.sk2015-08-22 → 2017-07-11 · 4 obs

● 2015-08-22 16:05:22
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

○MXmailin2.spamfilter.sk2015-08-22 → 2017-07-11 · 4 obs

● 2015-08-22 16:05:22
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

○MXmailinbackup1.spamfilter.sk2015-08-22 → 2016-03-17 · 4 obs

● 2015-08-22 16:05:22
● 2016-03-17 07:39:38
○ 2016-07-17 03:44:22
○ 2026-07-18 18:42:16

○A195.210.29.12015-08-22 → 2017-04-02 · 4 obs

● 2015-08-22 16:05:22
● 2017-04-02 15:56:32
○ 2017-07-11 04:48:10
○ 2026-07-18 18:42:16

○A37.9.175.102017-07-11 → 2017-07-11 · 4 obs

○ 2017-04-02 15:56:32
● 2017-07-11 04:48:10
○ 2026-07-16 08:36:28
○ 2026-07-18 18:42:16

●A91.228.166.472026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

●A91.228.167.1282026-07-16 → 2026-07-18 · 3 obs

○ 2017-07-11 04:48:10
● 2026-07-16 08:36:28
● 2026-07-18 18:42:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
sk	g.tld.sk, h.tld.sk, e.tld.sk, f.tld.sk	-
spamfilter.sk	dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net	-

✅ Authoritative Response

Server:198.51.44.1

NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for spamfilter.sk (unsigned zone)

⏱️ Timing

Total: 451ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`91.228.166.47, 91.228.167.128`
NS	4	`dns1.p04.nsone.net, dns2.p04.nsone.net...`
SOA	1	`dns1.p04.nsone.net hostmaster.nsone.net`

Analysis

IP Addresses

spamfilter.sk has two IP addresses: 91.228.166.47 and 91.228.167.128

Among the host names that share IP numbers with spamfilter.sk are eset-smart-security.net, my.eset.com, esetsoftware.eu and two others.

Name Servers

spamfilter.sk carries NS records listing 8 name servers — dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and 5 others.

The name servers of spamfilter.sk overlap at least partially with those of other domains — among them tbcinspections.com, igmarkets.jp, yooshop.net and two more.

These name servers commonly appear in delegations together with ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com and 7 other.

Hosts with two IP numbers each:

The A records for dns1.p01.nsone.net return 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1.

The A records for dns2.p01.nsone.net return 198.51.45.1 and 2a00:edc0:6259:7:1::2.

The A records for dns3.p01.nsone.net return 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3.

The A records for dns4.p01.nsone.net return 198.51.45.65 and 2a00:edc0:6259:7:1::4.

The A records for dns1.p04.nsone.net return 198.51.44.4 and 2620:4d:4000:6259:7:4:0:1.

The A records for dns2.p04.nsone.net return 198.51.45.4 and 2a00:edc0:6259:7:4::2.

The A records for dns3.p04.nsone.net return 198.51.44.68 and 2620:4d:4000:6259:7:4:0:3.

The A records for dns4.p04.nsone.net return 198.51.45.68 and 2a00:edc0:6259:7:4::4.