`certos.com`

DNSSEC	🔒 Signed (DS record present)
A	198.202.211.1^{🇺🇸 CLOUDFLARESPECTRUM198.202.211.0/24 Webflow}
NS	`edns4.ultradns.com` ⭐
		A	2001:502:f3ff::204^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`edns4.ultradns.com`
		A	204.74.66.4^{🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar}
			PTR	`edns4.ultradns.com`
NS	`edns4.ultradns.biz`
		A	2610:a1:1015::204^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`edns4.ultradns.biz`
		A	204.74.67.4^{🇺🇸 MAINT-ID-12008204.74.67.0/24 Neustar}
			PTR	`edns4.ultradns.biz`
NS	`edns4.ultradns.net`
		A	2610:a1:1014::204^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`edns4.ultradns.net`
		A	204.74.110.4^{🇺🇸 MAINT-ID-12008204.74.110.0/24 Neustar}
			PTR	`edns4.ultradns.net`
NS	`edns4.ultradns.org`
		A	2001:502:4612::204^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`edns4.ultradns.org`
		A	204.74.111.4^{🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar}
			PTR	`edns4.ultradns.org`
NS	`ns103.ultradns2.com`
		A	2610:a1:3167::53^{🇺🇸 AS3991692610:a1:3167::/48}
			PTR	`ns103.ultradns2.com`
		A	204.74.104.103^{🇺🇸 AS399169204.74.104.0/24 UltraDNS}
			PTR	`ns103.ultradns2.com`
NS	`ns103.ultradns2.org`
		A	2610:a1:3267::53^{🇺🇸 AS3991692610:a1:3267::/48}
			PTR	`ns103.ultradns2.org`
		A	204.74.106.103^{🇺🇸 AS399169204.74.106.0/24 UltraDNS}
MX	`mxa-00119301.gslb.pphosted.com` ⭐
		A	148.163.144.247^{🇺🇸 Proofpoint148.163.144.0/24 Inc.}
			PTR	`mx0a-00119301.pphosted.com`
MX	`mxb-00119301.gslb.pphosted.com` ⭐
		A	148.163.144.247^{🇺🇸 Proofpoint148.163.144.0/24 Inc.}
			PTR	`mx0a-00119301.pphosted.com`
TXT	`MS=ms52483974`
TXT	`_6avvjglsvhsphhzv2l3g8z9tuc65dhn`
TXT	`one-time-verification=ea714498-83b9-4feb-92fc-4a8a9aae1638`
TXT	`v=spf1 mx ip4:199.47.139.180 ip4:199.47.139.181 ip4:199.47.137.162 ip4:199.47...`
SOA	`edns4.ultradns.com`networkgroup@earlywarning.com 2025-04-03 #66

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778371487

🔒 HSTS Preload (+subdomains)

Same first word

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certos.co.uk

certos.pl

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DNS History

15 records (9 active, 6 former)

●NSedns4.ultradns.biz2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●NSedns4.ultradns.com2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●NSedns4.ultradns.net2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●NSedns4.ultradns.org2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

○NSns1.sedoparking.com2015-08-09 → 2017-03-13 · 4 obs

● 2015-08-09 07:49:24
● 2017-03-13 02:14:10
○ 2026-04-03 00:37:48
○ 2026-05-10 00:24:40

●NSns103.ultradns2.com2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●NSns103.ultradns2.org2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

○NSns2.sedoparking.com2015-08-09 → 2017-03-13 · 4 obs

● 2015-08-09 07:49:24
● 2017-03-13 02:14:10
○ 2026-04-03 00:37:48
○ 2026-05-10 00:24:40

○MXlocalhost2017-03-13 → 2017-03-13 · 4 obs

○ 2016-07-09 00:49:46
● 2017-03-13 02:14:10
○ 2026-04-03 00:37:48
○ 2026-05-10 00:24:40

○MXmail.nickstel.com2015-08-09 → 2016-07-09 · 4 obs

● 2015-08-09 07:49:24
● 2016-07-09 00:49:46
○ 2017-03-13 02:14:10
○ 2026-05-10 00:24:40

●MXmxa-00119301.gslb.pphosted.com2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●MXmxb-00119301.gslb.pphosted.com2026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

●A198.202.211.12026-04-03 → 2026-05-10 · 3 obs

○ 2017-03-13 02:14:10
● 2026-04-03 00:37:48
● 2026-05-10 00:24:40

○A72.52.4.1222017-03-13 → 2017-03-13 · 4 obs

○ 2016-07-09 00:49:46
● 2017-03-13 02:14:10
○ 2026-04-03 00:37:48
○ 2026-05-10 00:24:40

○A72.52.4.912015-08-09 → 2016-07-09 · 4 obs

● 2015-08-09 07:49:24
● 2016-07-09 00:49:46
○ 2017-03-13 02:14:10
○ 2026-05-10 00:24:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
certos.com	edns4.ultradns.net, edns4.ultradns.com, edns4.ultradns.biz, edns4.ultradns.org...	3 records

✅ Authoritative Response

Server:204.74.110.4

NS records: edns4.ultradns.net, edns4.ultradns.com, edns4.ultradns.biz, edns4.ultradns.org, ns103.ultradns2.com, ns103.ultradns2.org

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2630ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`198.202.211.1`
NS	6	`edns4.ultradns.biz, edns4.ultradns.com...`
MX	2	`mxa-00119301.gslb.pphosted.com (pri: 10), mxb-00119301.gslb.pphosted.com (pri: 10)`
TXT	4	`MS=ms52483974, _6avvjglsvhsphhzv2l3g8z9tuc65dhn...`
SOA	1	`edns4.ultradns.com networkgroup.earlywar`