root-servers.net IXFR zone transfer

Changes since SOA version

IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.

Domains in this zone

root-servers.net
a.root-servers.net
b.root-servers.net
c.root-servers.net
d.root-servers.net
e.root-servers.net
f.root-servers.net
g.root-servers.net
h.root-servers.net
i.root-servers.net
j.root-servers.net
k.root-servers.net
l.root-servers.net
m.root-servers.net

root-servers.net

SOA Start of authority
41d 16h
Zone apex
Start of authority
Email
[email protected]
Serial
2026021900
Refresh
4h
Retry
2h
Expire
14d
Negative cache TTL
41d 16h
NS Authoritative DNS server
41d 16h
a.root-servers.net
Verisign
b.root-servers.net
University of Southern California
c.root-servers.net
Cogent
d.root-servers.net
University of Maryland
e.root-servers.net
NASA
f.root-servers.net
ISC
g.root-servers.net
US Department of Defense
h.root-servers.net
US Army
i.root-servers.net
Netnod
j.root-servers.net
Verisign
k.root-servers.net
RIPE NCC
l.root-servers.net
ICANN
m.root-servers.net
Wide Project

a.root-servers.net

AAAA IPv6 address
41d 16h
2001:503:ba3e::2:30
VeriSign Global Registry Services
AS397197
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
198.41.0.4
VeriSign Global Registry Services
AS397197
Anycast IP
Served from multiple locations

b.root-servers.net

AAAA IPv6 address
41d 16h
2801:1b8:10::b
B.Root-Server-OPS
AS394353
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
170.247.170.2
B.Root-Server-OPS
AS394353
Anycast IP
Served from multiple locations

c.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:2::c
Cogent Communications
AS2149
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.33.4.12
Cogent Communications
AS2149
Anycast IP
Served from multiple locations

d.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:2d::d
University of Maryland
AS10886
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
199.7.91.13
University of Maryland
AS10886
Anycast IP
Served from multiple locations

e.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:a8::e
National Aeronautics and Space Administration
AS21556
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.203.230.10
National Aeronautics and Space Administration
AS21556
Anycast IP
Served from multiple locations

f.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:2f::f
Internet Systems Consortium
AS3557
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.5.5.241
Internet Systems Consortium
AS3557
Anycast IP
Served from multiple locations

g.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:12::d0d
United States Department of Defense (DoD)
AS5927
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.112.36.4
United States Department of Defense (DoD)
AS5927
Anycast IP
Served from multiple locations

h.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:1::53
Headquarters, USAISC
AS1508
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
198.97.190.53
Headquarters, USAISC
AS1508
Anycast IP
Served from multiple locations

i.root-servers.net

MX Mail server
41d 16h
mx.i.root-servers.org 10 Primary
AAAA IPv6 address
41d 16h
2001:7fe::53
Netnod AB
AS29216
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.36.148.17
Netnod AB
AS29216
Anycast IP
Served from multiple locations

j.root-servers.net

AAAA IPv6 address
41d 16h
2001:503:c27::2:30
VeriSign Global Registry Services
AS396661
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
192.58.128.30
VeriSign Global Registry Services
AS396651
Anycast IP
Served from multiple locations

k.root-servers.net

AAAA IPv6 address
41d 16h
2001:7fd::1
Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS25152
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
193.0.14.129
Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS25152
Anycast IP
Served from multiple locations

l.root-servers.net

AAAA IPv6 address
41d 16h
2001:500:9f::42
ICANN
AS20144
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
199.7.83.42
ICANN
AS20144
Anycast IP
Served from multiple locations

m.root-servers.net

AAAA IPv6 address
41d 16h
2001:dc3::35
WIDE Project
AS7500
Anycast IP
Served from multiple locations
A IPv4 address
41d 16h
202.12.27.33
WIDE Project
AS7500
Anycast IP
Served from multiple locations

Question and response

Question

dig root-servers.net. IXFR=0 @192.112.36.4

Answer

root-servers.net. 3600000 SOA a.root-servers.net. nstld.verisign-grs.com. 2026021900 14400 7200 1209600 3600000 root-servers.net. 3600000 NS a.root-servers.net. root-servers.net. 3600000 NS b.root-servers.net. root-servers.net. 3600000 NS c.root-servers.net. root-servers.net. 3600000 NS d.root-servers.net. root-servers.net. 3600000 NS e.root-servers.net. root-servers.net. 3600000 NS f.root-servers.net. root-servers.net. 3600000 NS g.root-servers.net. root-servers.net. 3600000 NS h.root-servers.net. root-servers.net. 3600000 NS i.root-servers.net. root-servers.net. 3600000 NS j.root-servers.net. root-servers.net. 3600000 NS k.root-servers.net. root-servers.net. 3600000 NS l.root-servers.net. root-servers.net. 3600000 NS m.root-servers.net. a.root-servers.net. 3600000 AAAA 2001:503:ba3e:0:0:0:2:30 a.root-servers.net. 3600000 A 198.41.0.4 b.root-servers.net. 3600000 AAAA 2801:1b8:10:0:0:0:0:b b.root-servers.net. 3600000 A 170.247.170.2 c.root-servers.net. 3600000 AAAA 2001:500:2:0:0:0:0:c c.root-servers.net. 3600000 A 192.33.4.12 d.root-servers.net. 3600000 AAAA 2001:500:2d:0:0:0:0:d d.root-servers.net. 3600000 A 199.7.91.13 e.root-servers.net. 3600000 AAAA 2001:500:a8:0:0:0:0:e e.root-servers.net. 3600000 A 192.203.230.10 f.root-servers.net. 3600000 AAAA 2001:500:2f:0:0:0:0:f f.root-servers.net. 3600000 A 192.5.5.241 g.root-servers.net. 3600000 AAAA 2001:500:12:0:0:0:0:d0d g.root-servers.net. 3600000 A 192.112.36.4 h.root-servers.net. 3600000 AAAA 2001:500:1:0:0:0:0:53 h.root-servers.net. 3600000 A 198.97.190.53 i.root-servers.net. 3600000 MX 10 mx.i.root-servers.org. i.root-servers.net. 3600000 AAAA 2001:7fe:0:0:0:0:0:53 i.root-servers.net. 3600000 A 192.36.148.17 j.root-servers.net. 3600000 AAAA 2001:503:c27:0:0:0:2:30 j.root-servers.net. 3600000 A 192.58.128.30 k.root-servers.net. 3600000 AAAA 2001:7fd:0:0:0:0:0:1 k.root-servers.net. 3600000 A 193.0.14.129 l.root-servers.net. 3600000 AAAA 2001:500:9f:0:0:0:0:42 l.root-servers.net. 3600000 A 199.7.83.42 m.root-servers.net. 3600000 AAAA 2001:dc3:0:0:0:0:0:35 m.root-servers.net. 3600000 A 202.12.27.33 root-servers.net. 3600000 SOA a.root-servers.net. nstld.verisign-grs.com. 2026021900 14400 7200 1209600 3600000

Authority

The response has no authority records.

Additional

The response has no additional records.