python-guide.readthedocs.org - dns.ninja
python-guide.readthedocs.org
readthedocs.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700::6812:61d🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700::6812:71d🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.18.6.29Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.18.7.29Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ivan.ns.cloudflare.com ⭐ | ||||||
| NS | tegan.ns.cloudflare.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| MX | alt1.aspmx.l.google.com(5) | ||||||
| MX | alt2.aspmx.l.google.com(5) | ||||||
| TXT | google-site-verification=-GDxsd6bay3wIn9zgT0lG0397PpmQMBKzP_W6B9oSxM | ||||||
| TXT | v=spf1 include:_spf.mlsend.com include:_spf.google.com ~all | ||||||
| HTTPS | HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.18.6.29, 104.18.7.29 | ||||||
| IPv6 hints | 2606:4700::6812:61d, 2606:4700::6812:71d | ||||||
| SOA | ivan.ns.cloudflare.comdns@cloudflare.com serial=2407204214 | ||||||
rank #1114 globally
rank #142 in the tld
WOT: SAFE (94/100)
📈 Tranco rank: #1,117
Same first word
DNS History
7 records (2 active, 5 former)
○MXalt1.aspmx.l.google.com2016-12-28 → 2016-12-28 · 3 obs
○ 2026-03-07 23:33:46
○ 2026-06-23 04:27:14
○MXalt2.aspmx.l.google.com2016-12-28 → 2016-12-28 · 3 obs
○ 2026-03-07 23:33:46
○ 2026-06-23 04:27:14
●MXaspmx.l.google.com2016-12-28 → 2026-06-23 · 2 obs
● 2026-06-23 04:27:14
○MXaspmx2.googlemail.com2016-12-28 → 2016-12-28 · 3 obs
○ 2026-03-07 23:33:46
○ 2026-06-23 04:27:14
○MXaspmx3.googlemail.com2016-12-28 → 2016-12-28 · 3 obs
○ 2026-03-07 23:33:46
○ 2026-06-23 04:27:14
○A162.209.114.752016-12-28 → 2016-12-28 · 3 obs
○ 2026-03-07 23:33:46
○ 2026-06-23 04:27:14
●CNAMEreadthedocs.io2026-03-07 → 2026-06-23 · 2 obs
● 2026-06-23 04:27:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| readthedocs.org | tegan.ns.cloudflare.com, ivan.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.226
NS records: tegan.ns.cloudflare.com, ivan.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for readthedocs.org (unsigned zone)
⏱️ Timing
Total: 556ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| MX | 1 | aspmx.l.google.com (pri: 1) |
| CNAME | 1 | readthedocs.io |
Analysis
IP Addresses
python-guide.readthedocs.org directs to four IP numbers, which are 104.16.253.120, 104.16.254.120, 2606:4700::6810:fd78 and 2606:4700::6810:fe78.
Additional host names — dioptas.readthedocs.io, stellar-repair-for-exchange.readthedocs.io, ouzo.readthedocs.io and two others — share IP numbers with python-guide.readthedocs.org.
Name Servers
python-guide.readthedocs.org has two authoritative name servers — ivan.ns.cloudflare.com and tegan.ns.cloudflare.com.
python-guide.readthedocs.org shares its name server setup with other domains, including bmbbqorders.com, billmillerbbq.com, systempluspioneer.com and two others.
At least some of python-guide.readthedocs.org's name servers are shared with other domains, for example pcluster.com, tngidi.com, tutocorner.org and two more.
These name servers tend to be deployed in combination with the name servers mustafa.ns.cloudflare.com and erin.ns.cloudflare.com.
Host names with 6 IP numbers:
ivan.ns.cloudflare.com points to 108.162.193.120, 172.64.33.120, 173.245.59.120 and 3 other IP addresses.
tegan.ns.cloudflare.com points to 108.162.192.226, 172.64.32.226, 173.245.58.226 and 3 other IP addresses.
Mail Servers
Five mail servers handle python-guide.readthedocs.org: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
python-guide.readthedocs.org shares mail servers — at least in part — with other domains, including ns500754.ns500754.ns500742.ns500731.ns500671.ns500671.ns500704.ns500688.ns500688.ns500291.lustychickser.com, ns500759.ns500758.ns500759.ns500758.ns500735.ns500735.ns500698.ns500736.ns500735.ns500708.ns500698.ns500619.ns500576.ns500576.ns500576.trackreceptor.com, oneclicklive.com and two others.
These mail servers are frequently used alongside mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt4.aspmx.l.google.com and 3 other.
Host names with two IP numbers:
aspmx2.googlemail.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.
aspmx.l.google.com resolves to 192.178.155.26 and 2607:f8b0:4004:c1d::1b.
alt1.aspmx.l.google.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.
The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 2800:3f0:4003:c0f::1b IP addresses.
The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 108.177.123.26 IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 2a00:1450:400b:c02::1b IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 172.253.116.27 IP addresses.