pbcslearn.com - dns.ninja

`pbcslearn.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:c359^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:447c^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.68.124^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.89^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kobe.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cc1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kobe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3c1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kobe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23c1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kobe.ns.cloudflare.com`
		A	108.162.195.193^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kobe.ns.cloudflare.com`
		A	162.159.44.193^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kobe.ns.cloudflare.com`
		A	172.64.35.193^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kobe.ns.cloudflare.com`
NS	`teresa.ns.cloudflare.com`
		A	2606:4700:50::a29f:26d8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`teresa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`teresa.ns.cloudflare.com`
		A	108.162.194.216^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	162.159.38.216^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	172.64.34.216^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁶¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁸⁹⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net include:_spf.elasticemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.68.124, 172.67.195.89
		IPv6 hints	2606:4700:3030::ac43:c359, 2606:4700:3035::6815:447c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=93, name=cloudflare-ech.com
SOA	`kobe.ns.cloudflare.com`dns@cloudflare.com serial=2407530873

`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=1785129147

Same first word

pbcslearn.com

DNS History

19 records (9 active, 10 former)

○NSdns1.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

○NSdns2.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

●NSkobe.ns.cloudflare.com2026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●NSteresa.ns.cloudflare.com2026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

○MXeforward1.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

○MXeforward2.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

○MXeforward3.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

○MXeforward4.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

○MXeforward5.registrar-servers.com2016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

●MXroute1.mx.cloudflare.net2026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●MXroute2.mx.cloudflare.net2026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●MXroute3.mx.cloudflare.net2026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●A104.21.68.1242026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●A172.67.195.892026-02-22 → 2026-07-27 · 3 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-07-27 05:40:58

●A2606:4700:3030::ac43:c3592026-07-12 → 2026-07-27 · 3 obs

○ 2026-06-17 08:07:20
● 2026-07-12 10:40:40
● 2026-07-27 05:40:58

○A2606:4700:3031::ac43:c3592026-02-22 → 2026-06-17 · 5 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-06-17 08:07:20
○ 2026-07-12 10:40:40
○ 2026-07-27 05:40:58

○A2606:4700:3033::6815:447c2026-02-22 → 2026-06-17 · 5 obs

○ 2017-07-01 16:32:40
● 2026-02-22 17:40:02
● 2026-06-17 08:07:20
○ 2026-07-12 10:40:40
○ 2026-07-27 05:40:58

●A2606:4700:3035::6815:447c2026-07-12 → 2026-07-27 · 3 obs

○ 2026-06-17 08:07:20
● 2026-07-12 10:40:40
● 2026-07-27 05:40:58

○A45.32.236.332016-12-13 → 2017-07-01 · 4 obs

● 2016-12-13 23:42:32
● 2017-07-01 16:32:40
○ 2026-02-22 17:40:02
○ 2026-07-27 05:40:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
pbcslearn.com	kobe.ns.cloudflare.com, teresa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.216

NS records: kobe.ns.cloudflare.com, teresa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pbcslearn.com (unsigned zone)

⏱️ Timing

Total: 1381ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.195.89, 104.21.68.124`
AAAA	2	`2606:4700:3030::ac43:c359, 2606:4700:3035::6815:447c`
NS	2	`kobe.ns.cloudflare.com, teresa.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 23), route2.mx.cloudflare.net (pri: 61)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net in`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kobe.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

pbcslearn.com resolves to four IP addresses: 104.21.68.124, 172.67.195.89, 2606:4700:3030::ac43:c359 and 2606:4700:3035::6815:447c.

Among the host names that share IP numbers with pbcslearn.com are www.elettronicanobile.biz, acumenit.sbs, xeratic.com and two others.

Name Servers

Two name servers handle the delegation for pbcslearn.com: kobe.ns.cloudflare.com and teresa.ns.cloudflare.com.

pbcslearn.com has the same name server delegation as a number of other domains, such as repath.gr, bibliyaaz.com, start-trezorstart.pages.dev and two more.

pbcslearn.com partially shares its NS delegation with several other domains, including wakanda33alternatif.monster, fungame777ways.com, indi.systems and two others.

These name servers are regularly seen alongside jason.ns.cloudflare.com and braden.ns.cloudflare.com as name servers.

Host names resolving to 6 IP numbers:

kobe.ns.cloudflare.com resolves to 108.162.195.193, 162.159.44.193 and 172.64.35.193 among others, with 3 other IP addresses in total.

teresa.ns.cloudflare.com resolves to 108.162.194.216, 162.159.38.216 and 172.64.34.216 among others, with 3 other IP addresses in total.

Mail Servers

pbcslearn.com uses three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

pbcslearn.com shares at least some of its mail servers with other domains — for example compararalquilerdecoches.es, trading-bd.com, rtvgro.net and two more.

Host names resolving to 6 IP numbers:

route1.mx.cloudflare.net resolves to 162.159.205.11, 162.159.205.12 and 162.159.205.13 among others, with 3 other IP addresses in total.

route2.mx.cloudflare.net resolves to 162.159.205.17, 162.159.205.18 and 162.159.205.19 among others, with 3 other IP addresses in total.

route3.mx.cloudflare.net resolves to 162.159.205.23, 162.159.205.24 and 162.159.205.25 among others, with 3 other IP addresses in total.