The following block area codes are accepted for the blockAreas parameter to restrict routes from passing through specific regions.

This feature is particularly useful for optimizing routes to avoid congestion, high costs, restricted or high risk zones.

ID	Name
11091	Oresund
11092	Muhu Strait
11093	East Khios
11094	West Kos
11095	North Rhodes
11096	West Ikaria
11097	East Ikaria
11098	Irbe Strait
11099	Corinth Canal
11100	Gibraltar
11101	Kiel Canal
11102	Lillebelt
11103	Magellan Strait
11104	Archipelago
11105	Inner Seas
11106	South Sri Lanka
11107	Northern Atlantic
11108	Pentland Firth
11109	Sea of Aland
11110	South Victoria Island
11111	Limfjorden
11112	Panama Canal
11113	Windward Passage
11114	Providence Channel
11115	NE Passage
11116	Mona Passage
11117	Suez Canal
11118	Elafonisou Strait
11119	Palk Strait
11120	MClure Strait
11121	Prince of Wales Strait
11122	Irish Sea
11123	Messina Strait
11124	West Khios
11125	East Kos
11126	South Rhodes
11127	Cape Horn
11128	Bosporus
11129	Dardanelles Strait
11130	Bay of Biscay
11131	Great Belt - Blocking
11132	Great Belt
11133	Dover Strait
11134	Ireland West Coast
11135	Malacca Strait
11136	Cape Good Hope
11137	Singapore Strait
11138	Skaw
11139	Yucatan Passage
11140	North Shetland
11141	Sumbawa Strait - Block
11142	Lombok Strait
11143	South of Sabang
11145	Sibutu Passage
11146	North of Sabang
11147	Sulu - Blocking
11148	Basilian Strait
11149	Bali Strait - Block
11150	Taiwan Strait
11151	San Bernardino Strait
11152	Mindoro Strait
11153	Surigao Strait
11154	Luzon Strait
11155	Karimata Strait
11156	Balbac Strait
11157	Makassar Strait
11158	Gela Canal
11159	Antigua Passage
11160	Guadalupe Passage
11161	Dominica Passage
11162	St. Lucia Passage
11163	St. Vincent Passage
11164	Osumi Strait
11165	East Taiwan
11166	Grenada Passage
11167	Anegada Passage
11168	Old Bahama Channel
11169	Florida Strait
11170	West Gotland
11171	East Gotland
11172	West Oland
11173	Torres Strait
11174	East Oland
11175	North Severnyj
11176	Karskiye Strait
11177	Yugorsky Strait
11178	Sannikov Strait
11179	Dmitriy Laptev Strait
11180	Tsugaru Strait
11181	Soya Strait
11182	Kanmon Strait
11183	Tatar Strait
11184	North Kotelny Island
11185	Bass Strait
11186	Cook Strait
11187	Foveaux Strait
11188	South Tasmania
11189	Ombai Strait
11190	Wetar Strait
11191	East Jamadena
11192	South Papua
11193	South Philippines
11194	Komodo - Blocking
11195	East Sulawesi
11196	Verde Island Passage
11197	Coron Bay - Blocking
11198	West Jamadena
11199	North Maluku
11200	South Sulawesi
11201	South Buton
11202	North Obi
11203	Thsushima Strait
11204	Fair Isle
11205	Lifamatola
11206	South Almaera
11207	North Salakan
11208	Bougainville Strait
11209	Halmahera
11210	Augusta's Strait
11211	Dampier Strait - Blocking
11212	Vitiaz Strait
11213	St. Georges Channel
11214	West Taliabu
11215	Banggai - Blocking
11216	North NZ
11217	Three Kings Island
11218	Naruto Strait
11219	Kitan Strait
11220	Akashi Strait
11221	Nemuro Strait
11222	Korean Strait
11223	Ishigaki Strait
11224	South Amami
11225	North Amami
11226	Kunashir
11227	Iturup
11228	Chirpoy
11229	South Raykoke
11230	North Raykoke
11231	Onekotan - Blocking
11232	First Kuril Strait
11233	Second Kuril Strait
11234	South Paramushir
11235	Orkney - Blocking
11236	Fury and Hecla Strait
11237	Bellot Strait
11238	Peel Sound
11239	MClintock Channel
11240	NW Passage
11241	Lancaster Sound
11242	Miyako Strait
11243	Beagle Channel
11244	South Yakushima
11245	Yakushima Strait
11246	Hoyo Strait
11247	Qiongzhou Strait
11248	South Hainan
11249	Ten Degree Canal
11250	North Andaman
11251	Sombrero Channel
11252	Nicobar - Block
11253	Andaman - Block
21220	Japanese Sea
21221	Guam
21541	Black Sea
21542	Strait of Ormoz
21543	Off Chittagong
21545	Off Abidjan
21546	Off Ghana
21547	Off Nigeria
21548	Off Conakry
21549	Off Gabon
21550	Sao Tome and Principe
21551	Off Pointe Nore
21552	Off Luanda
21553	Macapa area
21554	Off Callao
21555	Off Guayaquil
21556	Off Cartagena
21557	Off Haiti
21558	Off Puerto Dos Bocas
21597	North UK
21608	Gulf of Mexico
21615	Yemen coast
21617	Northern East Passage

Endpoints

The blockAreas parameter is applicable in the following APIs:

Route API: /route/v2/sea

Notes

You can include multiple block area IDs in the blockAreas parameter as a list.
If no blockAreas are provided, no areas will be explicitly blocked apart from default restrictions (e.g., ice areas, unless overridden with the allowIceAreas parameter).