sem-postma.com - dns.ninja

`sem-postma.com`

DNSSEC	⚠️ Not signed
A	2606:50c0:8000::153^{🇺🇸 Fastly2606:50c0:8000::/48 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	185.199.108.153^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
NS	`demi.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a5f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`demi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c05f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`demi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:205f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`demi.ns.cloudflare.com`
		A	108.162.192.95^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`demi.ns.cloudflare.com`
		A	172.64.32.95^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`demi.ns.cloudflare.com`
		A	173.245.58.95^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`demi.ns.cloudflare.com`
NS	`derek.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`derek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`derek.ns.cloudflare.com`
		A	108.162.193.154^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	172.64.33.154^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	173.245.59.154^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1f::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f26.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
TXT	`google-site-verification=C-SMMmSnazgEjqr8KoERGQLkPFJ_vSJisBnWzOyLf6w`
TXT	`google-site-verification=UUSnYFl2WkF3GY9Xx6z_Gk5OIOWl2vTPT8LJoZ8s7L8`
TXT	`v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com ~all`
SOA	`demi.ns.cloudflare.com`dns@cloudflare.com serial=2405488150

`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=1782731935

⚠️ On DNS blocklist: tif

Same first word

sem-postma.com

DNS History

9 records (9 active, 0 former)

●NSdemi.ns.cloudflare.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●NSderek.ns.cloudflare.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●MXalt1.aspmx.l.google.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●MXalt2.aspmx.l.google.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●MXalt3.aspmx.l.google.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●MXalt4.aspmx.l.google.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●MXaspmx.l.google.com2026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●A185.199.108.1532026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

●A2606:50c0:8000::1532026-05-29 → 2026-06-29 · 2 obs

● 2026-05-29 15:16:06
● 2026-06-29 11:32:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net...	-
sem-postma.com	demi.ns.cloudflare.com, derek.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.95

NS records: demi.ns.cloudflare.com, derek.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sem-postma.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.199.108.153`
AAAA	1	`2606:50c0:8000::153`
NS	2	`demi.ns.cloudflare.com, derek.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=C-SMMmSnazgEjqr, google-site-verification=UUSnYFl2WkF3GY9...`
SOA	1	`demi.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

sem-postma.com directs to two IP numbers, 185.199.108.153 and 2606:50c0:8000::153

Additional host names — lsru.github.io, dinglebit.com, ingener.by and two others — share IP numbers with sem-postma.com.

Name Servers

sem-postma.com has two authoritative name servers — demi.ns.cloudflare.com and derek.ns.cloudflare.com.

sem-postma.com shares its name server setup with other domains, including voipline.net.au, deerinternet.com, brightlanguage.com and two others.

sem-postma.com partially shares its NS delegation with several other domains, including jochemo.info, git2.com, rm4t.com and two others.

These name servers often co-occur with the name servers cris.ns.cloudflare.com.

Host names with 6 IP numbers:

demi.ns.cloudflare.com points to 108.162.192.95, 172.64.32.95, 173.245.58.95 and 3 other IP addresses.

derek.ns.cloudflare.com points to 108.162.193.154, 172.64.33.154, 173.245.59.154 and 3 other IP addresses.

Mail Servers

Mail for sem-postma.com is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

sem-postma.com shares mail servers — at least in part — with other domains, including gtwc.in, thecaskla.com, internationalglobalnetwork.com and two others.

These mail servers are frequently used alongside the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx2.googlemail.com, plus two others.

Host names with two IP numbers:

aspmx.l.google.com resolves to 64.233.180.26 and 2607:f8b0:4004:c1f::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.