`upstream.do`

DNSSEC	⚠️ Not signed
A	35.71.142.77^{🇺🇸 Amazon35.71.128.0/20}
		PTR	`a0b1d980e1f2226c6.awsglobalaccelerator.com`
A	52.223.52.2^{🇺🇸 Amazon52.223.48.0/20}
NS	`ns-1896.awsdns-45.co.uk` ⭐
		A	2600:9000:5307:6800::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1896.awsdns-45.co.uk`
		A	205.251.199.104^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1896.awsdns-45.co.uk`
NS	`ns-1430.awsdns-50.org`
		A	2600:9000:5305:9600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1430.awsdns-50.org`
		A	205.251.197.150^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1430.awsdns-50.org`
NS	`ns-336.awsdns-42.com`
		A	2600:9000:5301:5000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-336.awsdns-42.com`
		A	205.251.193.80^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-336.awsdns-42.com`
NS	`ns-683.awsdns-21.net`
		A	2600:9000:5302:ab00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-683.awsdns-21.net`
		A	205.251.194.171^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-683.awsdns-21.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f27.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.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::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=bPhyZaKvxTzc1u0PGyfDcUSGBrN3T35DY5m7aTwUk6w`
TXT	`google-site-verification=wBGsRNTMTHMBdCnZtbfOa8UK2BeTxoYm5aKk8fS7QB4`
TXT	`v=spf1 include:_mailcust.gandi.net include:_spf.google.com ?all`
SOA	`ns-1896.awsdns-45.co.uk`awsdns-hostmaster@amazon.com serial=1

`do`

	DNSSEC	⚠️ Not signed
	NS	`ns2.nic.do` ⭐
	NS	`a.lactld.org`
	NS	`ns.nic.do`
	NS	`ns1.nic.do`
	NS	`ns4.nic.do`
	NS	`ns5.nic.do`
	NS	`phloem.uoregon.edu`
	TXT	`Generation Time: 1785859211`
	SOA	`ns1.nic.do`hostmaster@nic.do 2026-08-04 #16

Same first word

Similar names

DNS History

11 records (11 active, 0 former)

●NSns-1430.awsdns-50.org2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●NSns-1896.awsdns-45.co.uk2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●NSns-336.awsdns-42.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●NSns-683.awsdns-21.net2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●MXalt1.aspmx.l.google.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●MXalt2.aspmx.l.google.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●MXalt3.aspmx.l.google.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●MXalt4.aspmx.l.google.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●MXaspmx.l.google.com2026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●A35.71.142.772026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

●A52.223.52.22026-06-01 → 2026-08-04 · 2 obs

● 2026-06-01 13:18:40
● 2026-08-04 17:40:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
do	ns5.nic.do, ns1.nic.do, ns2.nic.do, ns.nic.do...	-
upstream.do	ns-683.awsdns-21.net, ns-336.awsdns-42.com, ns-1896.awsdns-45.co.uk, ns-1430.awsdns-50.org	-

✅ Authoritative Response

Server:205.251.197.150

NS records: ns-683.awsdns-21.net, ns-336.awsdns-42.com, ns-1896.awsdns-45.co.uk, ns-1430.awsdns-50.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for do (unsigned zone)

⏱️ Timing

Total: 317ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`52.223.52.2, 35.71.142.77`
NS	4	`ns-1430.awsdns-50.org, ns-1896.awsdns-45.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=bPhyZaKvxTzc1u0, google-site-verification=wBGsRNTMTHMBdCn...`
SOA	1	`ns-1896.awsdns-45.co.uk awsdns-hostmaste`

Analysis

IP Addresses

upstream.do has two IP addresses: 35.71.142.77 and 52.223.52.2

Additional host names — kizer.me, logihub.com, emporum.se and two others — share IP numbers with upstream.do.

Name Servers

upstream.do has four authoritative name servers: ns-336.awsdns-42.com, ns-683.awsdns-21.net, ns-1430.awsdns-50.org and ns-1896.awsdns-45.co.uk.

At least some of upstream.do's name servers are shared with other domains, for example codancomms.com, 9.157.35.in-addr.arpa, oneopinion.de and two more.

These name servers tend to co-occur with ns1-24-eu-central-1.ec2-rdns.amazonaws.com, ns2-24-eu-central-1.ec2-rdns.amazonaws.com, ns3-24-eu-central-1.ec2-rdns.amazonaws.com and 7 other name servers in the same DNS delegations.

Four hostnames, each resolving to a pair of IP addresses: ns-336.awsdns-42.com directs to 205.251.193.80 and 2600:9000:5301:5000::1; ns-683.awsdns-21.net directs to 205.251.194.171 and 2600:9000:5302:ab00::1; ns-1430.awsdns-50.org directs to 205.251.197.150 and 2600:9000:5305:9600::1; ns-1896.awsdns-45.co.uk directs to 205.251.199.104 and 2600:9000:5307:6800::1.

Mail Servers

Five mail servers handle upstream.do: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

upstream.do shares mail servers — at least in part — with other domains, including trembiz.com, cyberall-access.com, thegamersblog.com and two others.

These mail servers are frequently paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com resolves to two addresses: 142.251.163.27 and 2607:f8b0:4004:c1d::1b.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

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

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.