diff --git a/app/models/domain.rb b/app/models/domain.rb
new file mode 100644
index 0000000..ca828fb
--- /dev/null
+++ b/app/models/domain.rb
@@ -0,0 +1,28 @@
+class Domain < ActiveRecord::Base
+  self.inheritance_column = :nx
+
+  def self.domain_types
+    [
+      'NATIVE',
+      'MASTER',
+      'SLAVE',
+    ]
+  end
+
+  has_many :records
+  has_one :soa, class_name: SOA
+
+  validates :name, uniqueness: true, presence: true
+  validates :type, presence: true, inclusion: { in: domain_types }
+
+  after_create :generate_soa
+
+  private
+
+  # Hooks
+  def generate_soa
+    soa_record = SOA.new(domain: self)
+    soa_record.save
+  end
+
+end
diff --git a/app/models/record.rb b/app/models/record.rb
new file mode 100644
index 0000000..faf9fdd
--- /dev/null
+++ b/app/models/record.rb
@@ -0,0 +1,54 @@
+class Record < ActiveRecord::Base
+  belongs_to :domain
+
+  def self.record_types
+    [
+      'SOA', 'NS', 'CNAME',
+      'A', 'AAAA',
+      'MX',
+      'TXT', 'SPF', 'SRV', 'SSHFP',
+      'PTR',
+    ]
+  end
+
+  validates :name, presence: true
+  validates :type, inclusion: { in: record_types }
+
+  before_validation :set_name
+  after_save :update_zone_serial
+  after_destroy :update_zone_serial
+
+  def short
+    return '' if name == domain.name
+    return '' if name.blank?
+
+    File.basename(name, ".#{domain.name}")
+  end
+
+  # Create record specific urls for all record types
+  #
+  # Overrides default rails STI
+  def self.model_name
+    return super if self == Record
+
+    Record.model_name
+  end
+
+  private
+
+  # Hooks
+
+  # Powerdns expects full domain names
+  def set_name
+    self.name = domain.name if name.blank?
+    self.name = "#{name}.#{domain.name}" if not name.end_with?(domain.name)
+  end
+
+  def update_zone_serial
+    # SOA records handle serial themselves
+    return true if type == 'SOA'
+
+    domain.soa.bump_serial!
+  end
+
+end