firststring.io - dns.ninja

`firststring.io`

DNSSEC	⚠️ Not signed
A	199.16.172.120^{🇺🇸 Automattic199.16.172.0/24 PRESSABLE}
A	199.16.173.5^{🇺🇸 Automattic199.16.173.0/24 PRESSABLE}
NS	`andy.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b65^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c165^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`andy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2165^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`andy.ns.cloudflare.com`
		A	108.162.193.101^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	172.64.33.101^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	173.245.59.101^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
NS	`ivy.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c078^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2078^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivy.ns.cloudflare.com`
		A	108.162.192.120^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	172.64.32.120^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
		A	173.245.58.120^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivy.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
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}
			PTR	`yubrupd-in-f26.1e100.net`
MX	`ruu4k6y322i2zqqkdsznn7rdyljdhxsudvwowaa7pbood2igvqca.mx-verification.google.com`⁽¹⁵⁾
SOA	`andy.ns.cloudflare.com`dns@cloudflare.com serial=2410415248

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1786184042

Subdomains

app.firststring.io

Same first word

firststring.cn

firststring.io

DNS History

10 records (10 active, 0 former)

●NSandy.ns.cloudflare.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●NSivy.ns.cloudflare.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXalt1.aspmx.l.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXalt2.aspmx.l.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXalt3.aspmx.l.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXalt4.aspmx.l.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXaspmx.l.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●MXruu4k6y322i2zqqkdsznn7rdyljdhxsudvwowaa7pbood2igvqca.mx-verification.google.com2026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●A199.16.172.1202026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

●A199.16.173.52026-02-24 → 2026-08-08 · 2 obs

● 2026-02-24 17:11:36
● 2026-08-08 10:31:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io	-
firststring.io	andy.ns.cloudflare.com, ivy.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.101

NS records: andy.ns.cloudflare.com, ivy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firststring.io (unsigned zone)

⏱️ Timing

Total: 439ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`199.16.173.5, 199.16.172.120`
NS	2	`andy.ns.cloudflare.com, ivy.ns.cloudflare.com`
MX	6	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
SOA	1	`andy.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

app.firststring.io is a subdomain of firststring.io.

IP Addresses

firststring.io has two IP addresses: 199.16.172.120 and 199.16.173.5

Two other host names, along with griptinite.com, library.uncg.edu and zacamesa.com, also share IP numbers with firststring.io.

Name Servers

firststring.io is delegated to two name servers: andy.ns.cloudflare.com and ivy.ns.cloudflare.com.

firststring.io shares its NS records with other domains, for example freecasinosonline.ca, get-a-free-sample.com, paburica.com and two others.

The name servers of firststring.io overlap at least partially with those of other domains — among them mzxsm.org.cn, cammagazine.co.nz, menet.eu and two more.

The name servers zariyah.ns.cloudflare.com, rob.ns.cloudflare.com and rita.ns.cloudflare.com are commonly seen alongside these name servers.

DNS names with 6 IP addresses:

andy.ns.cloudflare.com resolves to 108.162.193.101, 172.64.33.101, 173.245.59.101 and 3 other IP addresses.

ivy.ns.cloudflare.com resolves to 108.162.192.120, 172.64.32.120, 173.245.58.120 and 3 other IP addresses.

Mail Servers

firststring.io has 6 mail servers — aspmx.l.google.com, ruu4k6y322i2zqqkdsznn7rdyljdhxsudvwowaa7pbood2igvqca.mx-verification.google.com, alt1.aspmx.l.google.com plus 3 other.

There is at least a partial MX overlap between firststring.io and other domains, including ns500759.ns500758.ns500759.ns500758.ns500698.ns500698.ns500735.ns500735.ns500708.ns500576.ns500619.ns500619.ns500698.ns500576.ns500619.ns500619.trackreceptor.com, ns500758.ns500759.ns500759.ns500758.ns500735.ns500735.ns500735.ns500735.ns500708.ns500698.ns500698.ns500708.ns500576.ns500619.tracksymphony.com, ns500671.ns500671.ns500704.ns500731.ns500704.ns500704.ns500671.ns500731.ns500704.ns500678.ns500671.ns500291.ns500678.ns500688.ns500671.ns500649.lustychickser.com and two others.

These mail servers tend to appear in combination with mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and 4 others.

Host names that have two IP addresses:

aspmx.l.google.com points to 142.251.16.27 and 2607:f8b0:4004:c19::1b.

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

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

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

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