`come2boulderco.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:cdad^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5ae0^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.90.224^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.205.173^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elma.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elma.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elma.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elma.ns.cloudflare.com`
		A	108.162.192.154^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elma.ns.cloudflare.com`
		A	172.64.32.154^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elma.ns.cloudflare.com`
		A	173.245.58.154^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elma.ns.cloudflare.com`
NS	`giancarlo.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c05^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`giancarlo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c305^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`giancarlo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2305^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`giancarlo.ns.cloudflare.com`
		A	108.162.195.5^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`giancarlo.ns.cloudflare.com`
		A	162.159.44.5^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`giancarlo.ns.cloudflare.com`
		A	172.64.35.5^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`giancarlo.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.90.224, 172.67.205.173
		IPv6 hints	2606:4700:3034::ac43:cdad, 2606:4700:3036::6815:5ae0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=98, name=cloudflare-ech.com
SOA	`elma.ns.cloudflare.com`dns@cloudflare.com serial=2401055770

`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=1778413831

Same first word

come2boulderco.com

DNS History

18 records (6 active, 12 former)

●NSelma.ns.cloudflare.com2026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

●NSgiancarlo.ns.cloudflare.com2026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

○NSns1.hms-gtm.com2016-03-10 → 2016-03-10 · 4 obs

○ 2015-11-29 13:33:18
● 2016-03-10 17:09:50
○ 2016-07-24 13:29:38
○ 2026-05-10 12:00:52

○NSns1.moxiworks.com2016-07-24 → 2020-04-06 · 5 obs

○ 2016-03-10 17:09:50
● 2016-07-24 13:29:38
● 2020-04-06 18:14:42
○ 2026-02-25 13:19:02
○ 2026-05-10 12:00:52

○NSns1.summitnetworks.com2015-07-20 → 2015-11-29 · 4 obs

● 2015-07-20 11:28:36
● 2015-11-29 13:33:18
○ 2016-03-10 17:09:50
○ 2026-05-10 12:00:52

○NSns2.hms-gtm.com2016-03-10 → 2016-03-10 · 4 obs

○ 2015-11-29 13:33:18
● 2016-03-10 17:09:50
○ 2016-07-24 13:29:38
○ 2026-05-10 12:00:52

○NSns2.moxiworks.com2016-07-24 → 2020-04-06 · 5 obs

○ 2016-03-10 17:09:50
● 2016-07-24 13:29:38
● 2020-04-06 18:14:42
○ 2026-02-25 13:19:02
○ 2026-05-10 12:00:52

○NSns2.summitnetworks.com2015-07-20 → 2015-11-29 · 4 obs

● 2015-07-20 11:28:36
● 2015-11-29 13:33:18
○ 2016-03-10 17:09:50
○ 2026-05-10 12:00:52

○NSns3.moxiworks.com2016-07-24 → 2020-04-06 · 5 obs

○ 2016-03-10 17:09:50
● 2016-07-24 13:29:38
● 2020-04-06 18:14:42
○ 2026-02-25 13:19:02
○ 2026-05-10 12:00:52

●A104.21.90.2242026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

●A172.67.205.1732026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

○A199.34.233.62015-11-29 → 2015-11-29 · 4 obs

○ 2015-07-20 11:28:36
● 2015-11-29 13:33:18
○ 2016-03-10 17:09:50
○ 2026-05-10 12:00:52

○A205.234.73.1982016-07-24 → 2017-04-05 · 5 obs

○ 2016-03-10 17:09:50
● 2016-07-24 13:29:38
● 2017-04-05 14:17:32
○ 2020-04-06 18:14:42
○ 2026-05-10 12:00:52

●A2606:4700:3034::ac43:cdad2026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

●A2606:4700:3036::6815:5ae02026-02-25 → 2026-05-10 · 3 obs

○ 2020-04-06 18:14:42
● 2026-02-25 13:19:02
● 2026-05-10 12:00:52

○A64.246.164.1312020-04-06 → 2020-04-06 · 4 obs

○ 2017-04-05 14:17:32
● 2020-04-06 18:14:42
○ 2026-02-25 13:19:02
○ 2026-05-10 12:00:52

○A64.68.36.12016-03-10 → 2016-03-10 · 4 obs

○ 2015-11-29 13:33:18
● 2016-03-10 17:09:50
○ 2016-07-24 13:29:38
○ 2026-05-10 12:00:52

○A69.25.128.1422015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 11:28:36
○ 2015-11-29 13:33:18
○ 2026-05-10 12:00:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, m.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net...	-
come2boulderco.com	elma.ns.cloudflare.com, giancarlo.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.5

NS records: elma.ns.cloudflare.com, giancarlo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for come2boulderco.com (unsigned zone)

⏱️ Timing

Total: 170ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.90.224, 172.67.205.173`
AAAA	2	`2606:4700:3036::6815:5ae0, 2606:4700:3034::ac43:cdad`
NS	2	`elma.ns.cloudflare.com, giancarlo.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elma.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

come2boulderco.com refers to four IP numbers: 2606:4700:3034::ac43:cdad, 2606:4700:3036::6815:5ae0, 104.21.90.224 and 172.67.205.173.

Other host names, for instance 3ks.nl, mail.pihsiang.com.cn, 86656club.com, thanhcongdigital.com and wap.slobodnakultura.org share IP numbers with come2boulderco.com.

Name Servers

come2boulderco.com's delegation uses two name servers: elma.ns.cloudflare.com and giancarlo.ns.cloudflare.com.

come2boulderco.com uses the same name server setup as other domains, such as allyson.com, aauaalumni.com, bilgiccloud.net, cnreboot.com and homesinfairfieldcounty.com.

come2boulderco.com at least partially shares name servers with other domains, including grupointersalud.com, rdrct.it, smartwork.dk, watergate.co.uk and infrapentaomninanoethervia.com.

These name servers are often used with ligia.ns.cloudflare.com and leland.ns.cloudflare.com.

Host names with six IP numbers:

elma.ns.cloudflare.com points to 2606:4700:50::adf5:3a9a, 2803:f800:50::6ca2:c09a, 2a06:98c1:50::ac40:209a, 108.162.192.154, 172.64.32.154 and 173.245.58.154.

giancarlo.ns.cloudflare.com points to 2606:4700:58::a29f:2c05, 2803:f800:50::6ca2:c305, 2a06:98c1:50::ac40:2305, 108.162.195.5, 162.159.44.5 and 172.64.35.5.

come2boulderco.com - robtex.com