diff --git a/docs/source/contributing/pep.rst b/docs/source/contributing/pep.rst
index eed7379040..d429a6f885 100644
--- a/docs/source/contributing/pep.rst
+++ b/docs/source/contributing/pep.rst
@@ -1150,9 +1150,9 @@ is wanted instead of
 sequenced *after* wave 2 rather than by preference: the multicast options embed
 :rfc:`9777` MLD (which obsoletes :rfc:`3810`; :rfc:`2710` for MLDv1), which
 rides in **ICMPv6**, and :rfc:`3376` **IGMPv3** group records. ICMPv6 and
-IGMPv1/v2 are both wave 2 deliverables, now done; MLD itself remains a
-follow-up to ICMPv6 (see `More Protocols, More!!!`_ above), and IGMPv3 is
-:issue:`2448`. Landing the registry first would give a dispatch table with
+IGMP, IGMPv3 included (:issue:`2448`), are both wave 2 deliverables, now done;
+MLD itself remains a follow-up to ICMPv6 (see `More Protocols, More!!!`_
+above). Landing the registry first would give a dispatch table with
 :class:`~pcapkit.protocols.misc.raw.Raw` to register. The
 counter-argument is real though, and worth weighing rather than dismissing: changing the
 parsed shape from :obj:`bytes` to :class:`~pcapkit.protocols.misc.raw.Raw` is the
diff --git a/docs/source/ext.rst b/docs/source/ext.rst
index d4ca3b733e..cde3dd6e60 100644
--- a/docs/source/ext.rst
+++ b/docs/source/ext.rst
@@ -80,9 +80,11 @@ The protocol classes :mod:`pcapkit` ships:
 +                                                                  +----------------+-----------------------+-------------------------------------------------------------+
 |                                                                  |                | :class:`pcapkit.protocols.internet.igmp.IGMP`                                       |
 +                                                                  +                +-----------------------+-------------------------------------------------------------+
-|                                                                  | IGMP Family    | :class:`pcapkit.protocols.internet.igmpv1.IGMP`                                     |
-+                                                                  +                +-----------------------+-------------------------------------------------------------+
+|                                                                  |                | :class:`pcapkit.protocols.internet.igmpv1.IGMP`                                     |
++                                                                  + IGMP Family    +-----------------------+-------------------------------------------------------------+
 |                                                                  |                | :class:`pcapkit.protocols.internet.igmpv2.IGMP`                                     |
++                                                                  +                +-----------------------+-------------------------------------------------------------+
+|                                                                  |                | :class:`pcapkit.protocols.internet.igmpv3.IGMP`                                     |
 +------------------------------------------------------------------+----------------+-----------------------+-------------------------------------------------------------+
 | Transport Layer                                                  | :class:`pcapkit.protocols.transport.tcp.TCP`                                                         |
 + (:class:`~pcapkit.protocols.transport.transport.Transport`       +----------------+-----------------------+-------------------------------------------------------------+
diff --git a/docs/source/pcapkit/protocols/index.rst b/docs/source/pcapkit/protocols/index.rst
index dda108c083..3bbe5f0fe7 100644
--- a/docs/source/pcapkit/protocols/index.rst
+++ b/docs/source/pcapkit/protocols/index.rst
@@ -106,7 +106,7 @@ from given information. The class hierarchy of :mod:`pcapkit.protocols`:
            end
 
            subgraph igmp [IGMP Family]
-               IGMP --> IGMPv1 & IGMPv2
+               IGMP --> IGMPv1 & IGMPv2 & IGMPv3
            end
        end
 
@@ -150,6 +150,7 @@ from given information. The class hierarchy of :mod:`pcapkit.protocols`:
        click IGMP "internet/igmp.html#pcapkit.protocols.internet.igmp.IGMP"
        click IGMPv1 "internet/igmpv1.html#pcapkit.protocols.internet.igmpv1.IGMP"
        click IGMPv2 "internet/igmpv2.html#pcapkit.protocols.internet.igmpv2.IGMP"
+       click IGMPv3 "internet/igmpv3.html#pcapkit.protocols.internet.igmpv3.IGMP"
        click HOPOPT "internet/hopopt.html#pcapkit.protocols.internet.hopopt.HOPOPT"
        click ICMP "internet/icmp.html#pcapkit.protocols.internet.icmp.ICMP"
        click ICMPv4 "internet/icmpv4.html#pcapkit.protocols.internet.icmpv4.ICMPv4"
diff --git a/docs/source/pcapkit/protocols/internet/igmp.rst b/docs/source/pcapkit/protocols/internet/igmp.rst
index 212cb1ea40..5aa84631d1 100644
--- a/docs/source/pcapkit/protocols/internet/igmp.rst
+++ b/docs/source/pcapkit/protocols/internet/igmp.rst
@@ -8,11 +8,14 @@ IGMP - Internet Group Management Protocol
 Internet Group Management Protocol (IGMP) [*]_ versions 1, 2 and 3. IGMPv1
 and IGMPv2 share the 8-octet structure below.
 :class:`IGMPv1 <pcapkit.protocols.internet.igmpv1.IGMP>` and
-:class:`IGMPv2 <pcapkit.protocols.internet.igmpv2.IGMP>` set :attr:`version`
-and reuse this schema and data model as-is; IGMPv3's wire format differs
-materially by message, so :class:`IGMPv3 <pcapkit.protocols.internet.igmpv3.IGMP>`
-carries its own instead -- see :doc:`igmpv3`. :attr:`alias` names the version
-of each message read.
+:class:`IGMPv2 <pcapkit.protocols.internet.igmpv2.IGMP>` set
+:attr:`~pcapkit.protocols.internet.igmp.IGMP.version` and reuse this schema and
+data model as-is; IGMPv3's wire format differs materially by message, so
+:class:`IGMPv3 <pcapkit.protocols.internet.igmpv3.IGMP>` carries its own
+instead -- see :doc:`igmpv3`.
+:attr:`~pcapkit.protocols.internet.igmp.IGMP.alias` names the protocol each
+message is read as: ``'IGMP'`` for IGMPv1, the name :rfc:`1112` gives it, and
+``'IGMPv2'`` or ``'IGMPv3'`` for the others.
 
 ======= ========= ========================= ===================================
 Octets      Bits        Name                    Description
@@ -32,6 +35,8 @@ Octets      Bits        Name                    Description
    .. autoproperty:: alias
    .. autoproperty:: length
 
+   .. automethod:: id
+
    .. automethod:: read
    .. automethod:: make
 
diff --git a/pcapkit/protocols/internet/igmp.py b/pcapkit/protocols/internet/igmp.py
index a4b5668b66..c7ea47b9c1 100644
--- a/pcapkit/protocols/internet/igmp.py
+++ b/pcapkit/protocols/internet/igmp.py
@@ -76,7 +76,11 @@ def version(self) -> 'Literal[1, 2, 3]':
 
     @property
     def alias(self) -> 'str':
-        """Acronym of corresponding protocol, ``'IGMPv1'``, ``'IGMPv2'`` or ``'IGMPv3'``."""
+        """Acronym of corresponding protocol, ``'IGMP'``, ``'IGMPv2'`` or ``'IGMPv3'``.
+
+        IGMPv1 reports ``'IGMP'``, the name :rfc:`1112` gives it.
+
+        """
         return f'IGMPv{self.version}'
 
     @property