linux.kernel.org - robtex.com
linux.kernel.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 139.178.84.217🇺🇸 PACKET139.178.80.0/21 Equinix Services, Inc. | ||||||
| MX | smtp.subspace.kernel.org ⭐ | ||||||
| A | 44.238.234.78🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix | ||||||
| PTR | ec2-44-238-234-78.us-west-2.compute.amazonaws.com | ||||||
| TXT | v=spf1 include:_listspf.kernel.org ~all | ||||||
kernel.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2600:3c04:e001:324:0:1991:8:25🇨🇦 AKAMAI-LINODE-AP2600:3c04::/32 Akamai Technologies | ||||||
| A | 172.105.4.254🇨🇦 AKAMAI-LINODE-AP172.105.0.0/19 Akamai Technologies | ||||||
| NS | ns11.constellix.com ⭐ | ||||||
| NS | ns21.constellix.com | ||||||
| NS | ns31.constellix.com | ||||||
| NS | ns41.constellix.net | ||||||
| NS | ns51.constellix.net | ||||||
| NS | ns61.constellix.net | ||||||
| MX | smtp1.kernel.org ⭐ | ||||||
| MX | smtp2.kernel.org ⭐ | ||||||
| MX | smtp3.kernel.org ⭐ | ||||||
| TXT | v=spf1 include:_spf.kernel.org ~all | ||||||
| TXT | google-site-verification=nb4Wx5xBQM3b-a3OV2KSlPL786714Y7M6GfBtJf1opQ | ||||||
| SOA | ns11.constellix.comdns@constellix.com serial=2015014807 | ||||||
rank #449 globally
rank #57 in the tld
WOT: SAFE (95/100)
📈 Tranco rank: #1,283
PTR for
Same first word
Similar names
DNS History
5 records (2 active, 3 former)
○MXmail.kernel.org2015-06-13 → 2016-10-09 · 4 obs
● 2015-06-13 20:55:44
● 2016-10-09 21:20:18
○ 2021-06-30 00:44:10
○ 2026-07-04 19:38:30
● 2016-10-09 21:20:18
○ 2021-06-30 00:44:10
○ 2026-07-04 19:38:30
●MXsmtp.subspace.kernel.org2021-06-30 → 2026-07-04 · 3 obs
○ 2016-10-09 21:20:18
● 2021-06-30 00:44:10
● 2026-07-04 19:38:30
● 2021-06-30 00:44:10
● 2026-07-04 19:38:30
●A139.178.84.2172026-03-11 → 2026-07-04 · 3 obs
○ 2021-11-27 02:47:22
● 2026-03-11 10:42:12
● 2026-07-04 19:38:30
● 2026-03-11 10:42:12
● 2026-07-04 19:38:30
○A198.145.29.1462015-06-13 → 2016-10-09 · 4 obs
● 2015-06-13 20:55:44
● 2016-10-09 21:20:18
○ 2021-06-30 00:44:10
○ 2026-07-04 19:38:30
● 2016-10-09 21:20:18
○ 2021-06-30 00:44:10
○ 2026-07-04 19:38:30
○A198.145.29.832021-06-30 → 2021-11-27 · 5 obs
○ 2016-10-09 21:20:18
● 2021-06-30 00:44:10
● 2021-11-27 02:47:22
○ 2026-03-11 10:42:12
○ 2026-07-04 19:38:30
● 2021-06-30 00:44:10
● 2021-11-27 02:47:22
○ 2026-03-11 10:42:12
○ 2026-07-04 19:38:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| kernel.org | ns11.constellix.com, ns21.constellix.com, ns31.constellix.com, ns41.constellix.net... | - |
✅ Authoritative Response
Server:96.45.80.1
NS records: ns11.constellix.com, ns21.constellix.com, ns31.constellix.com, ns41.constellix.net, ns51.constellix.net, ns61.constellix.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kernel.org (unsigned zone)
⏱️ Timing
Total: 733ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 139.178.84.217 |
| MX | 1 | smtp.subspace.kernel.org (pri: 10) |
| TXT | 1 | v=spf1 include:_listspf.kernel.org ~all |
Analysis
IP Addresses
linux.kernel.org resolves to just one IP address, 139.178.84.217.
Other host names, such as android.kernel.org, share IP numbers with linux.kernel.org.
Mail Servers
The sole mail server for linux.kernel.org is smtp.subspace.kernel.org.
The mail server configuration of linux.kernel.org is identical to that of other domains, for example android.kernel.org and vger.kernel.org.
smtp.subspace.kernel.org resolves to a single IP number: 44.238.234.78.