`chicagosummeroflearning.org`

DNSSEC	⚠️ Not signed
NS	`ns-1533.awsdns-63.org` ⚠️ Not in zone NS records
		A	2600:9000:5305:fd00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1533.awsdns-63.org`
		A	205.251.197.253^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1533.awsdns-63.org`
NS	`ns-1564.awsdns-03.co.uk` ⚠️ Not in zone NS records
		A	2600:9000:5306:1c00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1564.awsdns-03.co.uk`
		A	205.251.198.28^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1564.awsdns-03.co.uk`
NS	`ns-364.awsdns-45.com` ⚠️ Not in zone NS records
		A	2600:9000:5301:6c00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-364.awsdns-45.com`
		A	205.251.193.108^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-364.awsdns-45.com`
NS	`ns-731.awsdns-27.net` ⚠️ Not in zone NS records
		A	2600:9000:5302:db00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-731.awsdns-27.net`
		A	205.251.194.219^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-731.awsdns-27.net`

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1785229062

Same first word

chicagosummeroflearning.com

chicagosummeroflearning.org

DNS History

8 records (4 active, 4 former)

●NSns-1533.awsdns-63.org2015-07-25 → 2026-07-28 · 2 obs

● 2015-07-25 04:58:54
● 2026-07-28 09:53:24

●NSns-1564.awsdns-03.co.uk2015-07-25 → 2026-07-28 · 2 obs

● 2015-07-25 04:58:54
● 2026-07-28 09:53:24

●NSns-364.awsdns-45.com2015-07-25 → 2026-07-28 · 2 obs

● 2015-07-25 04:58:54
● 2026-07-28 09:53:24

●NSns-731.awsdns-27.net2015-07-25 → 2026-07-28 · 2 obs

● 2015-07-25 04:58:54
● 2026-07-28 09:53:24

○MXmx1.scl3.mozilla.com2015-07-25 → 2017-01-05 · 4 obs

● 2015-07-25 04:58:54
● 2017-01-05 14:36:06
○ 2018-07-15 08:09:44
○ 2026-07-28 09:53:24

○MXmx2.scl3.mozilla.com2015-07-25 → 2017-01-05 · 4 obs

● 2015-07-25 04:58:54
● 2017-01-05 14:36:06
○ 2018-07-15 08:09:44
○ 2026-07-28 09:53:24

○A23.21.180.1442015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 04:58:54
○ 2015-11-30 17:25:34
○ 2026-07-28 09:53:24

○A54.235.213.2452015-07-25 → 2015-11-30 · 4 obs

● 2015-07-25 04:58:54
● 2015-11-30 17:25:34
○ 2016-03-16 21:21:06
○ 2026-07-28 09:53:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
chicagosummeroflearning.org	ns-731.awsdns-27.net, ns-364.awsdns-45.com, ns-1564.awsdns-03.co.uk, ns-1533.awsdns-63.org	2 records

✅ Authoritative Response

Server:205.251.194.219

NS records: ns-731.awsdns-27.net, ns-364.awsdns-45.com, ns-1564.awsdns-03.co.uk, ns-1533.awsdns-63.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for chicagosummeroflearning.org (unsigned zone)

⏱️ Timing

Total: 315ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-1533.awsdns-63.org, ns-1533.awsdns-63.org)

Analysis

Name Servers

The domain chicagosummeroflearning.org is delegated to these four name servers: ns-364.awsdns-45.com, ns-731.awsdns-27.net, ns-1533.awsdns-63.org and ns-1564.awsdns-03.co.uk.

The name servers of chicagosummeroflearning.org overlap at least partially with those of other domains — among them ub1core.com, epichonor.com, tele-engineer.com and two more.

Each of the four hosts ns-364.awsdns-45.com, ns-731.awsdns-27.net, ns-1533.awsdns-63.org and ns-1564.awsdns-03.co.uk has two IP addresses. ns-364.awsdns-45.com points to 205.251.193.108 and 2600:9000:5301:6c00::1. ns-731.awsdns-27.net points to 205.251.194.219 and 2600:9000:5302:db00::1. ns-1533.awsdns-63.org points to 205.251.197.253 and 2600:9000:5305:fd00::1. ns-1564.awsdns-03.co.uk points to 205.251.198.28 and 2600:9000:5306:1c00::1.

chicagosummeroflearning.org - robtex.com