onclass.com - dns.ninja

`onclass.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:85ce^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:5c7^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.5.199^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.133.206^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`melinda.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ac6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0c6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melinda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20c6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melinda.ns.cloudflare.com`
		A	108.162.192.198^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.32.198^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.58.198^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`noel.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noel.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`noel.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`noel.ns.cloudflare.com`
		A	108.162.193.216^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noel.ns.cloudflare.com`
		A	172.64.33.216^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noel.ns.cloudflare.com`
		A	173.245.59.216^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noel.ns.cloudflare.com`
MX	`onclass-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`NETORGFT6032570.onmicrosoft.com`
TXT	`_globalsign-domain-verification=OXiQHrdDqDXkkVbl_ZkrAK9B1spo2gMnPjSvsmv2Jc`
TXT	`_globalsign-domain-verification=lJQR9-p-69jFEzU3sY9RFxevuln8loVBeUTOsdSaJH`
TXT	`google-site-verification=GHXWBrXn_dLb37dqAtCfk0GP7TChL_5Hn12HYwKuaLY`
TXT	`google-site-verification=Wtxxv81ZUE6tdITgDA1aFM-UqglCI_5-w4V6ZWci9nM`
TXT	`v=spf1 a ip4:95.217.32.31 include:spf.protection.outlook.com -all`
TXT	`v=spf1 a:onclass.com a:onclass.tech ip4:65.108.78.116 include:spf.protection....`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.5.199, 172.67.133.206
		IPv6 hints	2606:4700:3032::ac43:85ce, 2606:4700:3034::6815:5c7
SOA	`melinda.ns.cloudflare.com`dns@cloudflare.com serial=2406502097

`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=1782800786

Same first word

onclass.tech

onclass.com

onclass.ru

onclass.cl

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DNS History

23 records (7 active, 16 former)

○NSdns31.register.com2007-10-29 → 2007-10-29 · 3 obs

● 2007-10-29 06:37:56
○ 2015-07-24 20:01:06
○ 2026-06-30 06:36:18

○NSdns32.register.com2007-10-29 → 2007-10-29 · 3 obs

● 2007-10-29 06:37:56
○ 2015-07-24 20:01:06
○ 2026-06-30 06:36:18

●NSmelinda.ns.cloudflare.com2026-02-24 → 2026-06-30 · 3 obs

○ 2020-02-15 08:54:58
● 2026-02-24 20:28:44
● 2026-06-30 06:36:18

●NSnoel.ns.cloudflare.com2026-02-24 → 2026-06-30 · 3 obs

○ 2020-02-15 08:54:58
● 2026-02-24 20:28:44
● 2026-06-30 06:36:18

○NSns1.hosting.co.kr2016-03-13 → 2016-03-13 · 4 obs

○ 2015-11-16 13:55:46
● 2016-03-13 06:08:40
○ 2016-07-06 16:06:16
○ 2026-06-30 06:36:18

○NSns1.sedoparking.com2015-07-24 → 2017-03-15 · 8 obs

○ 2007-10-29 06:37:56
● 2015-07-24 20:01:06
● 2015-11-16 13:55:46
○ 2016-03-13 06:08:40
● 2016-07-06 16:06:16
● 2017-03-15 02:58:34
○ 2020-01-27 13:17:50
○ 2026-06-30 06:36:18

○NSns2.hosting.co.kr2016-03-13 → 2016-03-13 · 4 obs

○ 2015-11-16 13:55:46
● 2016-03-13 06:08:40
○ 2016-07-06 16:06:16
○ 2026-06-30 06:36:18

○NSns2.sedoparking.com2015-07-24 → 2017-03-15 · 8 obs

○ 2007-10-29 06:37:56
● 2015-07-24 20:01:06
● 2015-11-16 13:55:46
○ 2016-03-13 06:08:40
● 2016-07-06 16:06:16
● 2017-03-15 02:58:34
○ 2020-01-27 13:17:50
○ 2026-06-30 06:36:18

○NSns53.domaincontrol.com2020-01-27 → 2020-02-15 · 5 obs

○ 2017-03-15 02:58:34
● 2020-01-27 13:17:50
● 2020-02-15 08:54:58
○ 2026-02-24 20:28:44
○ 2026-06-30 06:36:18

○NSns54.domaincontrol.com2020-01-27 → 2020-02-15 · 5 obs

○ 2017-03-15 02:58:34
● 2020-01-27 13:17:50
● 2020-02-15 08:54:58
○ 2026-02-24 20:28:44
○ 2026-06-30 06:36:18

○MXlocalhost2017-03-15 → 2017-03-15 · 4 obs

○ 2016-07-06 16:06:16
● 2017-03-15 02:58:34
○ 2020-01-27 13:17:50
○ 2026-06-30 06:36:18

○MXmail.nickstel.com2015-07-24 → 2016-07-06 · 7 obs

○ 2007-10-29 06:37:56
● 2015-07-24 20:01:06
● 2015-11-16 13:55:46
○ 2016-03-13 06:08:40
● 2016-07-06 16:06:16
○ 2017-03-15 02:58:34
○ 2026-06-30 06:36:18

●MXonclass-com.mail.protection.outlook.com2020-01-27 → 2026-06-30 · 3 obs

○ 2017-03-15 02:58:34
● 2020-01-27 13:17:50
● 2026-06-30 06:36:18

●A104.21.5.1992026-06-30 → 2026-06-30 · 3 obs

○ 2026-04-06 11:43:04
● 2026-06-30 03:46:52
● 2026-06-30 06:36:18

○A135.181.126.52026-02-24 → 2026-04-06 · 5 obs

○ 2020-02-15 08:54:58
● 2026-02-24 20:28:44
● 2026-04-06 11:43:04
○ 2026-06-30 03:46:52
○ 2026-06-30 06:36:18

●A172.67.133.2062026-06-30 → 2026-06-30 · 3 obs

○ 2026-04-06 11:43:04
● 2026-06-30 03:46:52
● 2026-06-30 06:36:18

○A211.234.63.2322016-03-13 → 2016-03-13 · 4 obs

○ 2015-11-16 13:55:46
● 2016-03-13 06:08:40
○ 2016-07-06 16:06:16
○ 2026-06-30 06:36:18

○A216.21.229.1962007-10-29 → 2007-10-29 · 3 obs

● 2007-10-29 06:37:56
○ 2015-07-24 20:01:06
○ 2026-06-30 06:36:18

●A2606:4700:3032::ac43:85ce2026-06-30 → 2026-06-30 · 3 obs

○ 2026-04-06 11:43:04
● 2026-06-30 03:46:52
● 2026-06-30 06:36:18

●A2606:4700:3034::6815:5c72026-06-30 → 2026-06-30 · 3 obs

○ 2026-04-06 11:43:04
● 2026-06-30 03:46:52
● 2026-06-30 06:36:18

○A72.52.4.1222017-03-15 → 2017-03-15 · 4 obs

○ 2016-07-06 16:06:16
● 2017-03-15 02:58:34
○ 2020-01-27 13:17:50
○ 2026-06-30 06:36:18

○A72.52.4.912015-07-24 → 2016-07-06 · 7 obs

○ 2007-10-29 06:37:56
● 2015-07-24 20:01:06
● 2015-11-16 13:55:46
○ 2016-03-13 06:08:40
● 2016-07-06 16:06:16
○ 2017-03-15 02:58:34
○ 2026-06-30 06:36:18

○A95.217.45.2342020-01-27 → 2020-02-15 · 5 obs

○ 2017-03-15 02:58:34
● 2020-01-27 13:17:50
● 2020-02-15 08:54:58
○ 2026-02-24 20:28:44
○ 2026-06-30 06:36:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net...	-
onclass.com	noel.ns.cloudflare.com, melinda.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.198

NS records: noel.ns.cloudflare.com, melinda.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onclass.com (unsigned zone)

⏱️ Timing

Total: 280ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.5.199, 172.67.133.206`
AAAA	2	`2606:4700:3034::6815:5c7, 2606:4700:3032::ac43:85ce`
NS	2	`melinda.ns.cloudflare.com, noel.ns.cloudflare.com`
MX	1	`onclass-com.mail.protection.outlook.com`
TXT	7	`NETORGFT6032570.onmicrosoft.com, _globalsign-domain-verification=OXiQHrdD...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`melinda.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

onclass.com resolves to four IP addresses: 104.21.5.199, 172.67.133.206, 2606:4700:3032::ac43:85ce and 2606:4700:3034::6815:5c7.

Among the host names that share IP numbers with onclass.com are rjlprecisioneng.co.uk, oferta7267215pl.click, makeupline.net and two others.

Name Servers

onclass.com has two authoritative name servers — melinda.ns.cloudflare.com and noel.ns.cloudflare.com.

onclass.com has the same name server delegation as a number of other domains, such as oldbikeshopcafe.com, viksi.me, scalecf.net and two more.

onclass.com partially shares its NS delegation with several other domains, including thefranklinchicago.com, sewapanelphoto.com, arh.digital and two others.

These name servers are regularly seen alongside ian.ns.cloudflare.com and susan.ns.cloudflare.com as name servers.

Host names resolving to 6 IP numbers:

melinda.ns.cloudflare.com points to 108.162.192.198, 172.64.32.198, 173.245.58.198 and 3 other IP addresses.

noel.ns.cloudflare.com points to 108.162.193.216, 172.64.33.216, 173.245.59.216 and 3 other IP addresses.

Mail Servers

onclass.com routes its mail through a single mail server, onclass-com.mail.protection.outlook.com.

onclass-com.mail.protection.outlook.com directs to 6 IP numbers, including 52.101.124.117, 52.101.137.0 and 52.101.157.80, along with 3 other.