concurrent.work - dns.ninja

`concurrent.work`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3035::6815:5bf5^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:b62c^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.245^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.182.44^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`algin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b3d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c13d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`algin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:213d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`algin.ns.cloudflare.com`
		A	108.162.193.61^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	172.64.33.61^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	173.245.59.61^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
NS	`rafe.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rafe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rafe.ns.cloudflare.com`
		A	108.162.192.216^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	172.64.32.216^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	173.245.58.216^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c1f::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f26.1e100.net`
		A	2607:f8b0:4004:c1f::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f27.1e100.net`
		A	2607:f8b0:4004:c21::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f26.1e100.net`
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
TXT	`google-site-verification=BVwstJxpCMjvrAE3Jargoakeh8EunIT6eWAy6tmje0E`
TXT	`google-site-verification=cBqTuq5jx_0thjmgVjmiCUgHdaVcuusEoHrABPxMz_M`
TXT	`neo-verification=FGjDjEwuzE`
TXT	`v=spf1 include:spf0001.neo.space ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.245, 172.67.182.44
		IPv6 hints	2606:4700:3035::6815:5bf5, 2606:4700:3035::ac43:b62c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOA	`algin.ns.cloudflare.com`dns@cloudflare.com serial=2411650665

`work`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.work` ⭐
	NS	`b.nic.work`
	NS	`c.nic.work`
	NS	`x.nic.work`
	NS	`y.nic.work`
	NS	`z.nic.work`
	SOA	`a.nic.work`admin@tldns.godaddy serial=1786171632

⚠️ On DNS blocklist: spam-tlds

Same first word

concurrent.fr

concurrent.co.uk

concurrent.work

concurrent.net

concurrent.biz

concurrent.org

concurrent.co

concurrent.dk

concurrent.eu

concurrent.jp

concurrent.ca

concurrent.tech

concurrent.com

concurrent.be

concurrent.co.za

concurrent.ch

Similar names

currentcon.com

truconnecr.com

DNS History

18 records (7 active, 11 former)

●NSalgin.ns.cloudflare.com2026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

○NSdns1.registrar-servers.com2026-03-25 → 2026-03-25 · 3 obs

○ 2017-08-27 10:30:16
● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○NSdns2.registrar-servers.com2026-03-25 → 2026-03-25 · 3 obs

○ 2017-08-27 10:30:16
● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○NSns29.domaincontrol.com2016-12-13 → 2017-08-27 · 4 obs

● 2016-12-13 02:50:46
● 2017-08-27 10:30:16
○ 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○NSns30.domaincontrol.com2016-12-13 → 2017-08-27 · 4 obs

● 2016-12-13 02:50:46
● 2017-08-27 10:30:16
○ 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

●NSrafe.ns.cloudflare.com2026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

○MXeforward1.registrar-servers.com2026-03-25 → 2026-03-25 · 2 obs

● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○MXeforward2.registrar-servers.com2026-03-25 → 2026-03-25 · 2 obs

● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○MXeforward3.registrar-servers.com2026-03-25 → 2026-03-25 · 2 obs

● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○MXeforward4.registrar-servers.com2026-03-25 → 2026-03-25 · 2 obs

● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

○MXeforward5.registrar-servers.com2026-03-25 → 2026-03-25 · 2 obs

● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

●MXsmtp.google.com2026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

●A104.21.91.2452026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

○A162.255.119.2172026-03-25 → 2026-03-25 · 3 obs

○ 2017-08-27 10:30:16
● 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

●A172.67.182.442026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

○A204.232.175.782016-12-13 → 2017-08-27 · 4 obs

● 2016-12-13 02:50:46
● 2017-08-27 10:30:16
○ 2026-03-25 09:52:18
○ 2026-08-08 07:11:50

●A2606:4700:3035::6815:5bf52026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

●A2606:4700:3035::ac43:b62c2026-08-08 → 2026-08-08 · 2 obs

○ 2026-03-25 09:52:18
● 2026-08-08 07:11:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
work	y.nic.work, z.nic.work, a.nic.work, c.nic.work...	12 records
concurrent.work	rafe.ns.cloudflare.com, algin.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.61

NS records: rafe.ns.cloudflare.com, algin.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 352ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.245, 172.67.182.44`
AAAA	2	`2606:4700:3035::ac43:b62c, 2606:4700:3035::6815:5bf5`
NS	2	`algin.ns.cloudflare.com, rafe.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	4	`google-site-verification=BVwstJxpCMjvrAE, google-site-verification=cBqTuq5jx_0thjm...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`algin.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.work, b.nic.work, c.nic.work...)

Analysis

IP Addresses

concurrent.work resolves to four IP addresses: 104.21.91.245, 172.67.182.44, 2606:4700:3035::6815:5bf5 and 2606:4700:3035::ac43:b62c.

Two other host names, along with solarmanage.com, www.onlybestgals.com and (0x706f726e)oeuro.com, also share IP numbers with concurrent.work.

Name Servers

DNS delegation for concurrent.work points to two name servers: algin.ns.cloudflare.com and rafe.ns.cloudflare.com.

concurrent.work shares its NS records with other domains, for example ejneuroscience.com, jcmmjournal.com, nanamovies.net and two others.

concurrent.work has at least partial name server overlap with other domains, such as huahengleegroup.com, mahospitalar.com.br, bankmbs.pl and two others.

It is common to see these name servers used together with name servers arya.ns.cloudflare.com and grace.ns.cloudflare.com.

DNS names with 6 IP addresses:

algin.ns.cloudflare.com has IP addresses 108.162.193.61, 172.64.33.61 and 173.245.59.61, plus 3 other.

rafe.ns.cloudflare.com has IP addresses 108.162.192.216, 172.64.32.216 and 173.245.58.216, plus 3 other.

Mail Servers

The sole mail server for concurrent.work is smtp.google.com.

Among the domains sharing a mail server setup with concurrent.work are celsa.it, conditioncover.com, ledger-company.com and two others.

There is at least a partial MX overlap between concurrent.work and other domains, including peacerestored.net, a1documentservices.com, demiras.com and two others.

These mail servers frequently co-occur with the mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, aspmx.l.google.com and two others.

With 9 IP addresses total, smtp.google.com resolves to 64.233.180.26, 64.233.180.27, 142.251.179.26 and 6 others.