A - Return A record (IPv4 address)

A - Return A record (IPv4 address)

This module returns an A record with a random IPv4 address from the TEST-NET-1 network range by default.

Alternatively, the client can specify the exact IP address to be returned by specifying it in hexadecimal format in the query.

Category: General features

Format 

a<00000000-ffffffff>.<NUMBER>.yourdomain.com

Where:

  • The <00000000-ffffffff> parameter defines the IPv4 address to be generated, specified in hexadecimal format.
  • The <NUMBER> parameter defines how many A records should be generated in the response.

Examples

The most basic example returns a random IPv4 address from the TEST-NET-1 (192.0.2.0/24) network range:

# dig a.yourdomain.com @127.0.0.1

; <<>> DiG 9.20.7-1-Debian <<>> a.yourdomain.com @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30677
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;a.yourdomain.com.		IN	A

;; ANSWER SECTION:
a.yourdomain.com.	60	IN	A	192.0.2.97

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Mon Jun 30 15:42:15 +04 2025
;; MSG SIZE  rcvd: 50

Download PCAP File


In this example, we request to generate 1.1.1.1 IPv4 address:

# dig a01010101.yourdomain.com @127.0.0.1

; <<>> DiG 9.20.7-1-Debian <<>> a01010101.yourdomain.com @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62406
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;a01010101.yourdomain.com.	IN	A

;; ANSWER SECTION:
a01010101.yourdomain.com. 60	IN	A	1.1.1.1

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Mon Jun 23 01:09:05 +04 2025
;; MSG SIZE  rcvd: 58

Download PCAP File


In this example, we request to generate 192.168.0.1 IPv4 address:

# dig ac0a80001.yourdomain.com @127.0.0.1

; <<>> DiG 9.20.7-1-Debian <<>> ac0a80001.yourdomain.com @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21400
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ac0a80001.yourdomain.com.	IN	A

;; ANSWER SECTION:
ac0a80001.yourdomain.com. 60	IN	A	192.168.0.1

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Mon Jun 23 01:06:56 +04 2025
;; MSG SIZE  rcvd: 58

Download PCAP File


In this example, we request to generate ten (10) 192.168.0.1 IPv4 addresses:

# dig ac0a80001.10.yourdomain.com @127.0.0.1

; <<>> DiG 9.20.7-1-Debian <<>> ac0a80001.10.yourdomain.com @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53864
;; flags: qr aa; QUERY: 1, ANSWER: 10, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ac0a80001.10.yourdomain.com.	IN	A

;; ANSWER SECTION:
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1
ac0a80001.10.yourdomain.com. 60	IN	A	192.168.0.1

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Mon Jun 23 01:06:57 +04 2025
;; MSG SIZE  rcvd: 205

Download PCAP File


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