underscore.io - dns.ninja

`underscore.io`

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	2606:50c0:8001::153^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8002::153^{🇺🇸 Fastly2606:50c0:8002::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8003::153^{🇺🇸 Fastly2606:50c0:8003::/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}
A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
A	185.199.110.153^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
A	185.199.111.153^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
NS	`ns1.dnsimple-edge.com` ⭐
		A	2620:111:8004::53^{🇺🇸 AS327712620:111:8004::/48 DNSimple Corporation}
		A	199.247.152.53^{🇺🇸 AS32771199.247.152.0/24 DNSimple Corporation}
NS	`ns2.dnsimple-edge.net`
		A	2620:111:8005::53^{🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route}
		A	199.247.153.53^{🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route}
NS	`ns3.dnsimple-edge.io`
		A	2620:111:8006::53^{🇺🇸 AS327712620:111:8006::/48 DNSimple Corporation}
		A	199.247.154.53^{🇺🇸 AS32771199.247.154.0/24 DNSimple Corporation}
NS	`ns4.dnsimple-edge.org`
		A	2620:111:8007::53^{🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route}
		A	199.247.155.53^{🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route}
MX	`mxa.mailgun.org` ⭐
		A	34.149.254.5^{🇺🇸 Google34.148.0.0/14}
			PTR	`5.254.149.34.bc.googleusercontent.com`
MX	`mxb.mailgun.org` ⭐
		A	34.36.182.139^{🇺🇸 Google34.32.0.0/11}
			PTR	`139.182.36.34.bc.googleusercontent.com`
TXT	`google-site-verification=tXhmPMkkvMo9MPmch_d8iirWG8WFZos8FDvoYlrO6VQ`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`v=spf1 include:mailgun.org ~all`
SOA	`ns1.dnsimple-edge.com`admin@dnsimple.com serial=1553783985

`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=1783668422

rank #869635 globally
rank #7094 in the tld

Subdomains

www.underscore.io

Same first word

Similar names

DNS History

33 records (14 active, 19 former)

○NSns-1070.awsdns-05.org2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○NSns-1647.awsdns-13.co.uk2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○NSns-26.awsdns-03.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○NSns-630.awsdns-14.net2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

●NSns1.dnsimple-edge.com2026-05-17 → 2026-07-10 · 3 obs

○ 2026-05-08 15:39:58
● 2026-05-17 22:11:22
● 2026-07-10 08:11:42

○NSns1.dnsimple.com2026-03-01 → 2026-05-08 · 5 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-05-08 15:39:58
○ 2026-05-17 22:11:22
○ 2026-07-10 08:11:42

●NSns2.dnsimple-edge.net2026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●NSns3.dnsimple-edge.io2026-05-17 → 2026-07-10 · 3 obs

○ 2026-05-08 15:39:58
● 2026-05-17 22:11:22
● 2026-07-10 08:11:42

○NSns3.dnsimple.com2026-03-01 → 2026-05-08 · 5 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-05-08 15:39:58
○ 2026-05-17 22:11:22
○ 2026-07-10 08:11:42

●NSns4.dnsimple-edge.org2026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

○MXalt1.aspmx.l.google.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○MXalt2.aspmx.l.google.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○MXaspmx.l.google.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○MXaspmx2.googlemail.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○MXaspmx3.googlemail.com2016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

●MXmxa.mailgun.org2026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●MXmxb.mailgun.org2026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A185.199.108.1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A185.199.109.1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A185.199.110.1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A185.199.111.1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A2606:50c0:8000::1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A2606:50c0:8001::1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A2606:50c0:8002::1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

●A2606:50c0:8003::1532026-03-01 → 2026-07-10 · 3 obs

○ 2016-12-05 01:58:16
● 2026-03-01 08:46:26
● 2026-07-10 08:11:42

○A54.192.139.1342016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.1602016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.172016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.2102016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.2332016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.2512016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.342016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

○A54.192.139.382016-12-05 → 2016-12-05 · 3 obs

● 2016-12-05 01:58:16
○ 2026-03-01 08:46:26
○ 2026-07-10 08:11:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
underscore.io	ns3.dnsimple-edge.io, ns2.dnsimple-edge.net, ns1.dnsimple-edge.com, ns4.dnsimple-edge.org	2 records

✅ Authoritative Response

Server:199.247.155.53

NS records: ns3.dnsimple-edge.io, ns2.dnsimple-edge.net, ns1.dnsimple-edge.com, ns4.dnsimple-edge.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for underscore.io (unsigned zone)

⏱️ Timing

Total: 826ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`185.199.108.153, 185.199.109.153...`
AAAA	4	`2606:50c0:8000::153, 2606:50c0:8001::153...`
NS	4	`ns1.dnsimple-edge.com, ns2.dnsimple-edge.net...`
MX	2	`mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10)`
TXT	3	`google-site-verification=tXhmPMkkvMo9MPm, v=spf1 include:_spf.google.com ~all...`
SOA	1	`ns1.dnsimple-edge.com admin.dnsimple.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.dnsimple-edge.io, ns3.dnsimple-edge.io)

Analysis

Hierarchy

www.underscore.io is delegated beneath underscore.io.

IP Addresses

With 8 IP addresses in total, underscore.io resolves to 185.199.108.153, 185.199.109.153, 185.199.110.153 and 5 other.

Among the host names that share IP numbers with underscore.io are quanfm.github.io, wernerdesign.co, djeo.github.io and two others.

Name Servers

The domain underscore.io is delegated to these four name servers: ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.

There is at least partial name server overlap between underscore.io and other domains — irkenaph.com, vertiluxcolombia.com, nucaut.ca and two more among them.

These name servers frequently co-occur with the name servers ns1.dnsimple.com and ns3.dnsimple.com.

All four hostnames — ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org — resolve to two IP numbers apiece: ns1.dnsimple-edge.com to 199.247.152.53 and 2620:111:8004::53; ns3.dnsimple-edge.io to 199.247.154.53 and 2620:111:8006::53; ns2.dnsimple-edge.net to 199.247.153.53 and 2620:111:8005::53; ns4.dnsimple-edge.org to 199.247.155.53 and 2620:111:8007::53.

Mail Servers

The MX records for underscore.io point to two mail servers: mxa.mailgun.org and mxb.mailgun.org.

underscore.io has the same mail server arrangement as a number of other domains, for example namgui.com, unprofessionalfoodie.com, orbisware.com and two more.

underscore.io shares at least some of its mail servers with other domains — for example eazycity.com, claritycompass.coach, cellunlocker.net and two more.

mxa.mailgun.org → 34.149.254.5 and mxb.mailgun.org → 34.36.182.139: one IP number per host name.