Codex Alexandrinus.

A or 02.

Date and provenance.
Century V, Alexandria.

Available scan(s).
Center for the Study of New Testament Manuscripts (index, British Museum facsimile edition):

Matthew (headings and 1.1-25.6a missing) 25.6b-35a; 25.35b-26.19a; 26.19b-46a; 26.46b-73a; 26.73b-27.28a; 27.28b-58a; 27.58b-28.19a; 28.19b-28.20.
Mark (headings) 1.1-30a; 1.30b-2.13; 2.14-3.8a; 3.8b-4.3a; 4.3b-32a; 4.32b-5.19; 5.20-6.3a; 6.3b-27a; 6.27b-54a; 6.54b-7.23; 7.24-8.14; 8.15-9.2a; 9.2b-29a; 9.29b-10.15a; 10.15b-32a; 10.32b-11.7a; 11.7b-33a; 11.33b-12.25a; 12.25b-13.5a; 13.5b-32a; 13.32b-14.23a; 14.23b-49; 14.50-15.5; 15.6-36; 15.37-16.16; 16.17-20.
Luke (headings and more headings) 1.1-27a; 1.27b-59a; 1.59b-2.11a; 2.11b-38a; 2.38b-3.11a; 3.11b-4.3a; 4.3b-29; 4.30-5.9a; 5.9b-32a; 5.32b-6.17a; 6.17b-42a; 6.42b-7.16a; 7.16b-39a; 7.39b-8.14a; 8.14b-35; 8.36-9.5; 9.6-27; 9.28-49a; 9.49b-10.13a; 10.13b-36a; 10.36b-11.18a; 11.18b-42a; 11.42b-12.10a; 12.10b-38a; 12.38b-13.4a; 13.4b-28a; 13.28b-14.17a; 14.17b-15.7a; 15.7b-16.1a; 16.1b-24a; 16.24b-17.16; 17.17-18.8; 18.9-36a; 18.36b-19.23a; 19.23b-20.6a; 20.6b-35a; 20.35b-21.21a; 21.21b-22.12a; 22.12b-42a; 22.42b-23.3a; 23.3b-33a; 23.33b-24.5a; 24.5b-32a; 24.32b-53.
John (headings) 1.1-18; 1.19-44; 1.45-2.18; 2.19-3.19; 3.20-4.13a; 4.13b-41; 4.42-5.14a; 5.14b-40a; 5.40b-6.22a; 6.22b-50a; 6.50b-8.52a missing; 8.52b-9.19a; 9.19b-10.7a; 10.7b-38a; 10.38b-11.30a; 11.30b-57a; 11.57b-12.27; 12.28-13.5a; 13.5b-36a; 13.36b-14.28a; 14.28b-15.26a; 15.26b-16.29a; 16.29b-17.24; 17.25-18.25a; 18.25b-19.10a; 19.10b-36a; 19.36b-20.20a; 20.20b-21.15a; 21.15b-21.25.
Acts 1.1-24a; 1.24b-2.23a; 2.23b-3.2; 3.3-4.3; 4.4-31a; 4.31b-5.21a; 5.21b-6.3a; 6.3b-7.14a; 7.14b-42a; 7.42b-8.10a; 8.10b-39a; 8.39b-9.27a; 9.27b-10.10; 10.11-36; 10.37-11.16a; 11.16b-12.10a; 12.10b-13.7a; 13.7b-32; 13.33-14.8a; 14.8b-15.4a; 15.4b-30a; 15.30b-16.15a; 16.15b-38; 16.39-17.20a; 17.20b-18.12a; 18.12b-19.10a; 19.10b-33a; 19.33b-20.16; 20.17-21.5a; 21.5b-27a; 21.27b-22.10a; 22.10b-23.6a; 23.6b-27; 23.28-24.21; 24.22-25.15; 25.16-26.11a; 26.11b-27.3a; 27.3b-28; 27.29-28.7; 28.8-30a; 28.30b-31.
James 1.1-15; 1.16-2.14; 2.15-3.16; 3.17-5.8a; 5.8b-20.
1 Peter 1.1-13a; 1.13b-2.16a; 2.16b-3.16a; 3.16b-5.1a; 5.1b-14.
2 Peter 1.1-14 1.15-2.16a; 2.16b-3.16a; 3.16b-18.
1 John 1.1-2.9a; 2.9b-3.5a; 3.5b-4.4a; 4.4b-5.9a; 5.9b-21.
2 John [1.]1-13.
3 John [1.]1-15.
Jude [1.]1-12a; [1.]12b-25.
Romans 1.1-27; 1.28-2.26a; 2.26b-3.31; 4.1-5.3a; 5.3b-6.9; 6.10-7.13a; 7.13b-8.20a; 8.20b-9.11; 9.12-10.10a; 10.10b-11.20a; 11.20b-12.14; 12.15-14.8a; 14.8b-15.11a; 15.11b-16.4a; 16.4b-27.
1 Corinthians 1.1-30; 1.31-3.13a; 3.13b-4.18a; 4.18b-6.18a; 6.18b-7.30a; 7.30b-9.6; 9.7-10.8a; 10.8b-11.6a; 11.6b-12.3a; 12.3b-13.3; 13.4-14.20; 14.21-15.12a; 15.12b-44a; 15.44b-16.15a; 16.15b-24.
2 Corinthians 1.1-16a; 1.16b-3.5a; 3.5b-4.13a; 4.13b-12.6 missing; 12.7-13.9a; 13.9b-13.
Galatians 1.1-14; 1.15-2.17a; 2.17b-3.24a; 3.24b-4.30a; 4.30b-6.7; 6.8-18.
Ephesians 1.1-14a; 1.14b-2.16a; 2.16b-4.4a; 4.4b-32; 5.1-33a; 5.33b-6.24.
Philippians 1.1-29a; 1.29b-2.30a; 2.30b-4.8a; 4.8b-23.
Colossians 1.1-13 1.14-2.8a; 2.8b-3.15a; 3.15b-4.18.
1 Thessalonians 1.1-2.13a; 2.13b-4.5a; 4.5b-5.15a; 5.15b-28.
2 Thessalonians 1.1-12a 1.12b-3.10; 3.11-18.
Hebrews 1.1-13a; 1.13b-3.6; 3.7-4.13; 4.14-6.10a; 6.10b-7.16a; 7.16b-8.12a; 8.12b-9.23; 9.24-10.23a; 10.23b-11.10a; 11.10b-11.35; 11.36-12.23a; 12.23b-13.21a; 13.21b-25.
1 Timothy 1.1-15a; 1.15b-3.13; 3.14-5.13a; 5.13b-6.14a; 6.14b-21.
2 Timothy 1.1-12a; 1.12b-2.22a; 2.22b-4.5; 4.6-22.
Titus 1.1-2.12; 2.13-3.15.
Philemon [1.]1-25.
Revelation (blank) 1.1-2.7; 2.8-3.5a; 3.5b-4.8a; 4.8b-6.7a; 6.7b-7.14a; 7.14b-9.6a; 9.6b-10.8a; 10.8b-11.19a; 11.19b-13.4a; 13.4b-14.7; 14.8-15.8a; 15.8b-17.3a; 17.3b-18.8; 18.9-19.7a; 19.7b-20.6; 20.7-21.14a; 21.14b-22.14a; 22.14b-21.
1 Clement 1.1-3.4a; 3.4b-7.2a; 7.2b-10.4a; 10.4b-13.2a; 13.2b-16.8a; 16.8b-18.11a; 18.11b-21.2a; 21.2b-24.3; 24.4-29.1a; 29.1b-33.3a; 33.3b-35.6a; 35.6b-38.2a; 38.2b-42.2a; 42.2b-45.1; 45.2a-48.1a; 48.1b-51.4a; 51.4b-55.6a; 55.6b-57.6; 57.7-63.4 missing; 64.1-65.2.
2 Clement 1.1-2.2; 2.3-6.1a; 6.1b-9.4a; 9.4b-12.5a; 12.5b-20.5 missing.

Useful links.
Codex Alexandrinus in the Catholic Encyclopedia.
Manuscript A in the Encyclopedia of NT Textual Criticism.
Codex Alexandrinus at Earlham.
British Library catalogue entry.
Headings and titles in Alexandrinus.

Codex Alexandrinus is so named because it came to Europe from Alexandria. Its text type is Alexandrian for most books, but Byzantine for the gospels.