expressioncomputing.com - dns.ninja

`expressioncomputing.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:863a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:197c^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.25.124^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.134.58^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c083^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2083^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lisa.ns.cloudflare.com`
		A	108.162.192.131^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	172.64.32.131^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	173.245.58.131^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
NS	`ray.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ray.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ray.ns.cloudflare.com`
		A	108.162.193.138^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	172.64.33.138^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	173.245.59.138^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
MX	`mail.expressioncomputing.com` ⭐
		A	96.30.10.222^{🇺🇸 LiquidWeb96.30.0.0/18 Liquid Web LLC 2703 Ena Dr Lansing, MI 48917}
			PTR	`mail.expressioncomputing.com`
TXT	`v=spf1 +a +mx +ip4:209.188.91.41 +ip4:96.30.10.222 include:spf.mandrillapp.co...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.25.124, 172.67.134.58
		IPv6 hints	2606:4700:3030::ac43:863a, 2606:4700:3036::6815:197c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=134, name=cloudflare-ech.com
SOA	`lisa.ns.cloudflare.com`dns@cloudflare.com serial=2406671117

`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=1782919731

Subdomains

mail.expressioncomputing.com

Same first word

expressioncomputing.com

DNS History

11 records (7 active, 4 former)

●NSlisa.ns.cloudflare.com2015-08-17 → 2026-07-01 · 2 obs

● 2015-08-17 18:43:22
● 2026-07-01 15:34:02

●NSray.ns.cloudflare.com2015-08-17 → 2026-07-01 · 2 obs

● 2015-08-17 18:43:22
● 2026-07-01 15:34:02

○MXdnr1.wiredtree.com2015-08-17 → 2016-12-05 · 4 obs

● 2015-08-17 18:43:22
● 2016-12-05 05:55:34
○ 2018-08-03 15:57:00
○ 2026-07-01 15:34:02

○MXdnr2.wiredtree.com2015-08-17 → 2016-12-05 · 4 obs

● 2015-08-17 18:43:22
● 2016-12-05 05:55:34
○ 2018-08-03 15:57:00
○ 2026-07-01 15:34:02

●MXmail.expressioncomputing.com2015-08-17 → 2026-07-01 · 2 obs

● 2015-08-17 18:43:22
● 2026-07-01 15:34:02

●A104.21.25.1242026-02-15 → 2026-07-01 · 3 obs

○ 2018-08-03 15:57:00
● 2026-02-15 00:48:48
● 2026-07-01 15:34:02

●A172.67.134.582026-02-15 → 2026-07-01 · 3 obs

○ 2018-08-03 15:57:00
● 2026-02-15 00:48:48
● 2026-07-01 15:34:02

○A209.188.88.202015-08-17 → 2016-04-13 · 4 obs

● 2015-08-17 18:43:22
● 2016-04-13 05:03:50
○ 2016-12-05 05:55:34
○ 2026-07-01 15:34:02

○A209.188.91.412016-12-05 → 2018-08-03 · 5 obs

○ 2016-04-13 05:03:50
● 2016-12-05 05:55:34
● 2018-08-03 15:57:00
○ 2026-02-15 00:48:48
○ 2026-07-01 15:34:02

●A2606:4700:3030::ac43:863a2026-02-15 → 2026-07-01 · 3 obs

○ 2018-08-03 15:57:00
● 2026-02-15 00:48:48
● 2026-07-01 15:34:02

●A2606:4700:3036::6815:197c2026-02-15 → 2026-07-01 · 3 obs

○ 2018-08-03 15:57:00
● 2026-02-15 00:48:48
● 2026-07-01 15:34:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
expressioncomputing.com	lisa.ns.cloudflare.com, ray.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.138

NS records: lisa.ns.cloudflare.com, ray.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for expressioncomputing.com (unsigned zone)

⏱️ Timing

Total: 161ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.25.124, 172.67.134.58`
AAAA	2	`2606:4700:3036::6815:197c, 2606:4700:3030::ac43:863a`
NS	2	`lisa.ns.cloudflare.com, ray.ns.cloudflare.com`
MX	1	`mail.expressioncomputing.com (pri: 20)`
TXT	1	`v=spf1 +a +mx +ip4:209.188.91.41 +ip4:96`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lisa.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

mail.expressioncomputing.com is delegated beneath expressioncomputing.com.

IP Addresses

expressioncomputing.com directs to four IP numbers, which are 104.21.25.124, 172.67.134.58, 2606:4700:3030::ac43:863a and 2606:4700:3036::6815:197c.

Among the host names that share IP numbers with expressioncomputing.com are techbillions.com, dreamadream.org, dannyspizzaofrochester.com and two others.

Name Servers

Two name servers handle the delegation for expressioncomputing.com: lisa.ns.cloudflare.com and ray.ns.cloudflare.com.

expressioncomputing.com has the same name server delegation as a number of other domains, such as practicebacker.com, sarroffdesigns.com, dfone.com.tw and two more.

There is at least partial name server overlap between expressioncomputing.com and other domains — mentorsrock.com, draftproservices.com, anabolika-steroide.com and two more among them.

These name servers frequently co-occur with the name servers ken.ns.cloudflare.com and marjory.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

lisa.ns.cloudflare.com resolves to 108.162.192.131, 172.64.32.131 and 173.245.58.131 among others, with 3 other IP addresses in total.

ray.ns.cloudflare.com resolves to 108.162.193.138, 172.64.33.138 and 173.245.59.138 among others, with 3 other IP addresses in total.

Mail Servers

expressioncomputing.com routes its mail through a single mail server, mail.expressioncomputing.com.

mail.expressioncomputing.com carries a single IP number, which is 96.30.10.222.