`sci-and-u.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:8fce^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1bf8^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.27.248^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.143.206^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hera.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hera.ns.cloudflare.com`
		A	108.162.192.162^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	172.64.32.162^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	173.245.58.162^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
NS	`kellen.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kellen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kellen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kellen.ns.cloudflare.com`
		A	108.162.195.160^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kellen.ns.cloudflare.com`
		A	162.159.44.160^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kellen.ns.cloudflare.com`
		A	172.64.35.160^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kellen.ns.cloudflare.com`
MX	`mx1.emailsrvr.com` ⭐
		A	146.20.161.1^{🇺🇸 RACKSPACE-IAD146.20.0.0/16 Rackspace US Inc}
			PTR	`mx1.emailsrvr.com`
MX	`mx2.emailsrvr.com`⁽²⁰⁾
		A	184.106.54.2^{🇺🇸 RACKSPACE-ORD184.106.54.0/24 Rackspace ORD}
			PTR	`mx2.emailsrvr.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.27.248, 172.67.143.206
		IPv6	2606:4700:3034::ac43:8fce, 2606:4700:3037::6815:1bf8
SOA	`hera.ns.cloudflare.com`dns@cloudflare.com serial=2398451628

`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=1771291435

Previously MX for

sci-and-u.com

Same first word

sci-and-u.com

DNS History

19 records (8 active, 11 former)

○NSdns.rebel.com2016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 04:50:50
○ 2018-05-28 09:24:58
○ 2026-03-23 18:34:30

○NSdns2.rebel.com2016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 04:50:50
○ 2018-05-28 09:24:58
○ 2026-03-23 18:34:30

●NShera.ns.cloudflare.com2026-02-15 → 2026-03-23 · 3 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
● 2026-03-23 18:34:30

●NSkellen.ns.cloudflare.com2026-02-15 → 2026-03-23 · 3 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
● 2026-03-23 18:34:30

○NSns1.sciselfmanagement.ca2018-05-28 → 2018-05-28 · 4 obs

○ 2016-12-17 04:50:50
● 2018-05-28 09:24:58
○ 2026-02-15 01:22:32
○ 2026-03-23 18:34:30

○NSns2.sciselfmanagement.ca2018-05-28 → 2018-05-28 · 4 obs

○ 2016-12-17 04:50:50
● 2018-05-28 09:24:58
○ 2026-02-15 01:22:32
○ 2026-03-23 18:34:30

●MXmx1.emailsrvr.com2026-02-15 → 2026-03-23 · 3 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
● 2026-03-23 18:34:30

●MXmx2.emailsrvr.com2026-02-15 → 2026-03-23 · 3 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
● 2026-03-23 18:34:30

○MXsci-and-u.com2018-05-28 → 2018-05-28 · 3 obs

● 2018-05-28 09:24:58
○ 2026-02-15 01:22:32
○ 2026-03-23 18:34:30

●A104.21.27.2482026-02-15 → 2026-03-23 · 6 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
○ 2026-02-16 04:35:40
○ 2026-02-17 18:36:20
● 2026-03-04 13:45:12
● 2026-03-23 18:34:30

●A172.67.143.2062026-02-15 → 2026-03-23 · 6 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
○ 2026-02-16 04:35:40
○ 2026-02-17 18:36:20
● 2026-03-04 13:45:12
● 2026-03-23 18:34:30

○A172.99.81.1622016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 04:50:50
○ 2018-05-28 09:24:58
○ 2026-03-23 18:34:30

○A184.154.120.222018-05-28 → 2018-05-28 · 4 obs

○ 2016-12-17 04:50:50
● 2018-05-28 09:24:58
○ 2026-02-15 01:22:32
○ 2026-03-23 18:34:30

○A188.114.96.02026-02-16 → 2026-02-17 · 5 obs

○ 2026-02-15 01:22:32
● 2026-02-16 04:35:40
● 2026-02-17 18:36:20
○ 2026-03-04 13:45:12
○ 2026-03-23 18:34:30

○A188.114.97.02026-02-16 → 2026-02-17 · 5 obs

○ 2026-02-15 01:22:32
● 2026-02-16 04:35:40
● 2026-02-17 18:36:20
○ 2026-03-04 13:45:12
○ 2026-03-23 18:34:30

●A2606:4700:3034::ac43:8fce2026-02-15 → 2026-03-23 · 6 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
○ 2026-02-16 04:35:40
○ 2026-02-17 18:36:20
● 2026-03-04 13:45:12
● 2026-03-23 18:34:30

●A2606:4700:3037::6815:1bf82026-02-15 → 2026-03-23 · 6 obs

○ 2018-05-28 09:24:58
● 2026-02-15 01:22:32
○ 2026-02-16 04:35:40
○ 2026-02-17 18:36:20
● 2026-03-04 13:45:12
● 2026-03-23 18:34:30

○A2a06:98c1:3120::2026-02-16 → 2026-02-17 · 5 obs

○ 2026-02-15 01:22:32
● 2026-02-16 04:35:40
● 2026-02-17 18:36:20
○ 2026-03-04 13:45:12
○ 2026-03-23 18:34:30

○A2a06:98c1:3121::2026-02-16 → 2026-02-17 · 5 obs

○ 2026-02-15 01:22:32
● 2026-02-16 04:35:40
● 2026-02-17 18:36:20
○ 2026-03-04 13:45:12
○ 2026-03-23 18:34:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
sci-and-u.com	hera.ns.cloudflare.com, kellen.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.162

NS records: hera.ns.cloudflare.com, kellen.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sci-and-u.com (unsigned zone)

⏱️ Timing

Total: 211ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.27.248, 172.67.143.206`
AAAA	2	`2606:4700:3037::6815:1bf8, 2606:4700:3034::ac43:8fce`
NS	2	`hera.ns.cloudflare.com, kellen.ns.cloudflare.com`
MX	2	`mx1.emailsrvr.com (pri: 10), mx2.emailsrvr.com (pri: 20)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hera.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (hera.ns.cloudflare.com, hera.ns.cloudflare.com, hera.ns.cloudflare.com...)

Analysis

IP Addresses

sci-and-u.com points to four IP numbers: 2606:4700:3034::ac43:8fce, 2606:4700:3037::6815:1bf8, 104.21.27.248 and 172.67.143.206.

Other host names including promecliz.com, luminousgoods.site, lemfeporosumogna.cloud, mail.adrylin.com and editionsmr.com share IP numbers with sci-and-u.com.

Name Servers

sci-and-u.com's delegation uses two name servers, hera.ns.cloudflare.com and kellen.ns.cloudflare.com.

sci-and-u.com shares the same name server setup as other domains, for example catastrodigital.com, wetapestore.net, crimssaerstudio.shop, saeng.co.th and markpak.co.th.

sci-and-u.com at least partially shares name servers with other domains, including sprintec.com.br, koksportalen.se, tickets-platform.com, 72211z.com and teleghira.fan.

these name servers are commonly used together with bart.ns.cloudflare.com, kenia.ns.cloudflare.com and kai.ns.cloudflare.com.

Host names with six IP numbers:

hera.ns.cloudflare.com points to: 2606:4700:50::adf5:3aa2, 2803:f800:50::6ca2:c0a2, 2a06:98c1:50::ac40:20a2, 108.162.192.162, 172.64.32.162 and 173.245.58.162.

kellen.ns.cloudflare.com points to: 2606:4700:58::a29f:2ca0, 2803:f800:50::6ca2:c3a0, 2a06:98c1:50::ac40:23a0, 108.162.195.160, 162.159.44.160 and 172.64.35.160.

Mail Servers

sci-and-u.com is handled by two mail servers: mx1.emailsrvr.com and mx2.emailsrvr.com.

sci-and-u.com shares its mail server setup with other domains, including larryahearn.com, orr-roofing.com, calvaryfullgospel.org, gamesync.us and bigautosecret.com.

The mail servers for sci-and-u.com are shared with other domains, for instance newevolutionvideoproduction.com, evolvestudios.tv, wiredforchange.org, penland.net and client-216-57-220-050.bhm.pogozone.net.

Host names with a single IP:

mx1.emailsrvr.com points to 146.20.161.1.

mx2.emailsrvr.com points to 184.106.54.2.

sci-and-u.com - robtex.com

sci-and-u.com

com

Previously MX for

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`sci-and-u.com`

`com`