`usk.edu`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:5dfb^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:d95f^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.93.251^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.217.95^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`henrik.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c369^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`henrik.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2369^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`henrik.ns.cloudflare.com`
		A	108.162.195.105^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	162.159.44.105^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
		A	172.64.35.105^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henrik.ns.cloudflare.com`
NS	`selah.ns.cloudflare.com`
		A	2606:4700:50::a29f:2615^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`selah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c215^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`selah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2215^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`selah.ns.cloudflare.com`
		A	108.162.194.21^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`selah.ns.cloudflare.com`
		A	162.159.38.21^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`selah.ns.cloudflare.com`
		A	172.64.34.21^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`selah.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f26.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`LVDCqecFTj2T1URUuNb0c-65tN4rcxjvAsi6ygTRwvg`
TXT	`MS=F674AC3C3BD7240732268DBFF763D238E480D0A4`
TXT	`google-site-verification=LVDCqecFTj2T1URUuNb0c-65tN4rcxjvAsi6ygTRwvg`
TXT	`google-site-verification=pZDsQmZgbWBXL6N2h_1-oqtsL1TnI4KNjQYz8hTGr28`
TXT	`v=spf1 ip4:50.87.253.134 ip4:35.202.42.190 ip4:209.85.220.41 include:_spf.goo...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.93.251, 172.67.217.95
		IPv6 hints	2606:4700:3034::6815:5dfb, 2606:4700:3034::ac43:d95f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=23, name=cloudflare-ech.com
SOA	`henrik.ns.cloudflare.com`dns@cloudflare.com serial=2409016791

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1785566397

Same first word

usk.de

usk.kr

usk.com.cn

usk.se

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usk.fr

usk.in.ua

usk.ge

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Similar names

ksu.edu.sa

suk.me

suk.kr

kus.at

uks.com.pl

uks.pl

kus.com.tw

kus.se

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kus.az

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sku.cc

kus.ru

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ksu.edu.cn

ksu.ch

sku.lt

kus.com.lk

ksu.no

uks.ee

uks.co.in

ksu.sa

uks.biz

kus.it

DNS History

14 records (11 active, 3 former)

●NShenrik.ns.cloudflare.com2026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

○NSns1.after40summit.com2018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 18:05:14
○ 2026-07-31 19:58:48
○ 2026-08-01 07:20:04

○NSns2.after40summit.com2018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 18:05:14
○ 2026-07-31 19:58:48
○ 2026-08-01 07:20:04

●NSselah.ns.cloudflare.com2026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

●MXalt1.aspmx.l.google.com2018-05-06 → 2026-08-01 · 2 obs

● 2018-05-06 18:05:14
● 2026-08-01 07:20:04

●MXalt2.aspmx.l.google.com2018-05-06 → 2026-08-01 · 2 obs

● 2018-05-06 18:05:14
● 2026-08-01 07:20:04

●MXaspmx.l.google.com2018-05-06 → 2026-08-01 · 2 obs

● 2018-05-06 18:05:14
● 2026-08-01 07:20:04

●MXaspmx2.googlemail.com2018-05-06 → 2026-08-01 · 2 obs

● 2018-05-06 18:05:14
● 2026-08-01 07:20:04

●MXaspmx3.googlemail.com2018-05-06 → 2026-08-01 · 2 obs

● 2018-05-06 18:05:14
● 2026-08-01 07:20:04

●A104.21.93.2512026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

●A172.67.217.952026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

●A2606:4700:3034::6815:5dfb2026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

●A2606:4700:3034::ac43:d95f2026-07-31 → 2026-08-01 · 3 obs

○ 2018-05-06 18:05:14
● 2026-07-31 19:58:48
● 2026-08-01 07:20:04

○A66.147.244.2352018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 18:05:14
○ 2026-07-31 19:58:48
○ 2026-08-01 07:20:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	26 records
usk.edu	selah.ns.cloudflare.com, henrik.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.21

NS records: selah.ns.cloudflare.com, henrik.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usk.edu (unsigned zone)

⏱️ Timing

Total: 682ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.93.251, 172.67.217.95`
AAAA	2	`2606:4700:3034::ac43:d95f, 2606:4700:3034::6815:5dfb`
NS	2	`henrik.ns.cloudflare.com, selah.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...`
TXT	5	`LVDCqecFTj2T1URUuNb0c-65tN4rcxjvAsi6ygTR, MS=F674AC3C3BD7240732268DBFF763D238E480D...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`henrik.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 26

Out-of-bailiwick: 26 (a.edu-servers.net, a.edu-servers.net, b.edu-servers.net...)

Analysis

IP Addresses

usk.edu resolves to four IP addresses: 104.21.93.251, 172.67.217.95, 2606:4700:3034::6815:5dfb and 2606:4700:3034::ac43:d95f.

mengakar.com, ltsrqp.info, file-install.com plus two other host names have IP numbers in common with usk.edu.

Name Servers

usk.edu is served by two delegated name servers, henrik.ns.cloudflare.com and selah.ns.cloudflare.com.

The name server configuration of usk.edu is shared with other domains, for instance smoothslideslidingdoors.com, arywnoraaveon.com, slottoto.io and two others.

usk.edu shares at least some of its name servers with other domains, including urbanclassicsignal.pro, cecbr.com, carestreamhealth.co.il and two others.

These name servers are frequently paired with the name servers angela.ns.cloudflare.com and alla.ns.cloudflare.com.

Hosts with 6 IP addresses each:

henrik.ns.cloudflare.com carries IP addresses 108.162.195.105, 162.159.44.105 and 172.64.35.105, with 3 other addresses beyond those.

selah.ns.cloudflare.com carries IP addresses 108.162.194.21, 162.159.38.21 and 172.64.34.21, with 3 other addresses beyond those.

Mail Servers

usk.edu is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

At least some of the mail servers used by usk.edu are shared with other domains: ns500754.ns500671.ns500742.ns500754.ns500742.ns500731.ns500705.ns500704.ns500688.ns500649.ns500291.ns500153.tenderladiesbz.com, atlassteel.ma, foks.ai and two others among them.

These mail servers are often deployed together with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx.l.google.com maps to two IP addresses — 142.251.179.27 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 108.177.123.27 IP addresses.

These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 2a00:1450:400b:c02::1a IP addresses.

usk.edu - robtex.com

usk.edu

edu

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`usk.edu`

`edu`