`jsurbd.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:5c37^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:bad1^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.92.55^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.186.209^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`crystal.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26ca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`crystal.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`crystal.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`crystal.ns.cloudflare.com`
		A	108.162.194.202^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`crystal.ns.cloudflare.com`
		A	162.159.38.202^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`crystal.ns.cloudflare.com`
		A	172.64.34.202^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`crystal.ns.cloudflare.com`
NS	`thaddeus.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c7f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thaddeus.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`thaddeus.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`thaddeus.ns.cloudflare.com`
		A	108.162.195.127^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thaddeus.ns.cloudflare.com`
		A	162.159.44.127^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thaddeus.ns.cloudflare.com`
		A	172.64.35.127^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thaddeus.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.92.55, 172.67.186.209
		IPv6	2606:4700:3034::6815:5c37, 2606:4700:3035::ac43:bad1
SOA	`crystal.ns.cloudflare.com`dns@cloudflare.com serial=2398356498

`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

jsurbd.com

Same first word

jsurbd.com

Similar names

jrdubs.com

DNS History

14 records (6 active, 8 former)

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

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-23 09:58:12

○NSns39.websitewelcome.com2016-12-14 → 2018-01-05 · 4 obs

● 2016-12-14 07:16:00
● 2018-01-05 09:14:18
○ 2026-02-15 15:58:12
○ 2026-03-23 09:58:12

○NSns40.websitewelcome.com2016-12-14 → 2018-01-05 · 4 obs

● 2016-12-14 07:16:00
● 2018-01-05 09:14:18
○ 2026-02-15 15:58:12
○ 2026-03-23 09:58:12

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

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-23 09:58:12

○MXjsurbd.com2016-12-14 → 2026-02-15 · 4 obs

● 2016-12-14 07:16:00
● 2026-02-15 15:58:12
○ 2026-02-17 14:09:10
○ 2026-03-23 09:58:12

●A104.21.92.552026-02-15 → 2026-03-23 · 6 obs

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-04 14:14:26
○ 2026-03-05 00:06:04
● 2026-03-17 01:37:04
● 2026-03-23 09:58:12

●A172.67.186.2092026-02-15 → 2026-03-23 · 6 obs

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-04 14:14:26
○ 2026-03-05 00:06:04
● 2026-03-17 01:37:04
● 2026-03-23 09:58:12

○A188.114.96.02026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 14:14:26
● 2026-03-05 00:06:04
○ 2026-03-17 01:37:04
○ 2026-03-23 09:58:12

○A188.114.97.02026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 14:14:26
● 2026-03-05 00:06:04
○ 2026-03-17 01:37:04
○ 2026-03-23 09:58:12

○A192.185.95.1942016-12-14 → 2018-01-05 · 4 obs

● 2016-12-14 07:16:00
● 2018-01-05 09:14:18
○ 2026-02-15 15:58:12
○ 2026-03-23 09:58:12

●A2606:4700:3034::6815:5c372026-02-15 → 2026-03-23 · 6 obs

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-04 14:14:26
○ 2026-03-05 00:06:04
● 2026-03-17 01:37:04
● 2026-03-23 09:58:12

●A2606:4700:3035::ac43:bad12026-02-15 → 2026-03-23 · 6 obs

○ 2018-01-05 09:14:18
● 2026-02-15 15:58:12
● 2026-03-04 14:14:26
○ 2026-03-05 00:06:04
● 2026-03-17 01:37:04
● 2026-03-23 09:58:12

○A2a06:98c1:3120::2026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 14:14:26
● 2026-03-05 00:06:04
○ 2026-03-17 01:37:04
○ 2026-03-23 09:58:12

○A2a06:98c1:3121::2026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 14:14:26
● 2026-03-05 00:06:04
○ 2026-03-17 01:37:04
○ 2026-03-23 09:58:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
jsurbd.com	crystal.ns.cloudflare.com, thaddeus.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.202

NS records: crystal.ns.cloudflare.com, thaddeus.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jsurbd.com (unsigned zone)

⏱️ Timing

Total: 123ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.186.209, 104.21.92.55`
AAAA	2	`2606:4700:3034::6815:5c37, 2606:4700:3035::ac43:bad1`
NS	2	`crystal.ns.cloudflare.com, thaddeus.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`crystal.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

jsurbd.com resolves to four IPs: 2606:4700:3034::6815:5c37, 2606:4700:3035::ac43:bad1, 104.21.92.55 and 172.67.186.209.

Other host names such as mail.congtycuulong.com.vn, www.antique.in.th, idenyaman.com, www.lencois.com.br and hqbaiyi.com share IP numbers with jsurbd.com.

Name Servers

jsurbd.com is delegated to two name servers: crystal.ns.cloudflare.com and thaddeus.ns.cloudflare.com.

jsurbd.com uses the same name server setup as other domains, including zalaniolineo.com, wailianba.net, meilingo088.com, schuhe.com.cn and 27676.net.

At least part of the name servers for jsurbd.com are shared with other domains, for instance biltzheim.com, nickslights.com, birakingelsin.com, bjso.org and mapanindo.com.

These name servers are commonly used alongside the name servers apollo.ns.cloudflare.com.

Host names with six IP numbers:

crystal.ns.cloudflare.com points to: 2606:4700:50::a29f:26ca, 2803:f800:50::6ca2:c2ca, 2a06:98c1:50::ac40:22ca, 108.162.194.202, 162.159.38.202 and 172.64.34.202.

thaddeus.ns.cloudflare.com points to: 2606:4700:58::a29f:2c7f, 2803:f800:50::6ca2:c37f, 2a06:98c1:50::ac40:237f, 108.162.195.127, 162.159.44.127 and 172.64.35.127.

jsurbd.com - robtex.com

jsurbd.com

com

Previously MX for

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

`jsurbd.com`

`com`