Country stats for last year of data For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	1882	322 (17.1%)	183 (9.7%)	1363 (72.4%)	14 (0.7%)	311	130 (41.8%)
usa (United States)	5748	267 (4.6%)	1082 (18.8%)	4399 (76.5%)	0 (0.0%)	596	128 (21.5%)
ind (India)	1755	177 (10.1%)	119 (6.8%)	1434 (81.7%)	25 (1.4%)	54	17 (31.5%)
ita (Italy)	420	54 (12.9%)	24 (5.7%)	341 (81.2%)	1 (0.2%)	36	9 (25.0%)
arg (Argentina)	209	44 (21.1%)	15 (7.2%)	150 (71.8%)	0 (0.0%)	23	10 (43.5%)
kor (South Korea)	734	41 (5.6%)	411 (56.0%)	282 (38.4%)	0 (0.0%)	40	13 (32.5%)
mys (Malaysia)	351	38 (10.8%)	40 (11.4%)	273 (77.8%)	0 (0.0%)	14	2 (14.3%)
can (Canada)	801	37 (4.6%)	86 (10.7%)	678 (84.6%)	0 (0.0%)	83	14 (16.9%)
gbr (United Kingdom)	1351	35 (2.6%)	123 (9.1%)	1193 (88.3%)	0 (0.0%)	112	21 (18.8%)
jpn (Japan)	355	34 (9.6%)	36 (10.1%)	284 (80.0%)	1 (0.3%)	48	15 (31.3%)
nld (Netherlands)	705	26 (3.7%)	160 (22.7%)	519 (73.6%)	0 (0.0%)	114	19 (16.7%)
bol (Bolivia)	98	25 (25.5%)	6 (6.1%)	66 (67.3%)	1 (1.0%)	3	1 (33.3%)
isr (Israel)	176	23 (13.1%)	2 (1.1%)	151 (85.8%)	0 (0.0%)	13	5 (38.5%)
tha (Thailand)	489	22 (4.5%)	19 (3.9%)	448 (91.6%)	0 (0.0%)	22	5 (22.7%)
chl (Chile)	152	21 (13.8%)	9 (5.9%)	122 (80.3%)	0 (0.0%)	28	9 (32.1%)
aus (Australia)	858	20 (2.3%)	62 (7.2%)	776 (90.4%)	0 (0.0%)	65	14 (21.5%)
deu (Germany)	1950	19 (1.0%)	355 (18.2%)	1576 (80.8%)	0 (0.0%)	80	16 (20.0%)
egy (Egypt)	149	16 (10.7%)	1 (0.7%)	132 (88.6%)	0 (0.0%)	4	2 (50.0%)
pol (Poland)	186	15 (8.1%)	12 (6.5%)	159 (85.5%)	0 (0.0%)	34	8 (23.5%)
fra (France)	474	13 (2.7%)	63 (13.3%)	395 (83.3%)	3 (0.6%)	52	10 (19.2%)
rus (Russian Federation)	169	13 (7.7%)	24 (14.2%)	132 (78.1%)	0 (0.0%)	79	7 (8.9%)
tur (Turkey)	201	13 (6.5%)	4 (2.0%)	184 (91.5%)	0 (0.0%)	22	6 (27.3%)
swe (Sweden)	306	12 (3.9%)	32 (10.5%)	262 (85.6%)	0 (0.0%)	51	8 (15.7%)
vnm (Vietnam)	84	12 (14.3%)	7 (8.3%)	65 (77.4%)	0 (0.0%)	8	4 (50.0%)
are (United Arab Emirates)	59	11 (18.6%)	3 (5.1%)	45 (76.3%)	0 (0.0%)	7	2 (28.6%)
rou (Romania)	89	11 (12.4%)	6 (6.7%)	72 (80.9%)	0 (0.0%)	17	4 (23.5%)
sau (Saudi Arabia)	54	11 (20.4%)	1 (1.9%)	42 (77.8%)	0 (0.0%)	4	2 (50.0%)
sen (Senegal)	34	11 (32.4%)	0 (0.0%)	23 (67.6%)	0 (0.0%)	2	1 (50.0%)
ury (Uruguay)	436	11 (2.5%)	14 (3.2%)	410 (94.0%)	1 (0.2%)	10	6 (60.0%)
idn (Indonesia)	58	10 (17.2%)	1 (1.7%)	47 (81.0%)	0 (0.0%)	21	7 (33.3%)
ken (Kenya)	56	10 (17.9%)	2 (3.6%)	44 (78.6%)	0 (0.0%)	9	5 (55.6%)
zaf (South Africa)	376	9 (2.4%)	32 (8.5%)	335 (89.1%)	0 (0.0%)	39	7 (17.9%)
esp (Spain)	299	8 (2.7%)	8 (2.7%)	282 (94.3%)	1 (0.3%)	28	6 (21.4%)
zmb (Zambia)	14	8 (57.1%)	0 (0.0%)	6 (42.9%)	0 (0.0%)	3	1 (33.3%)
col (Colombia)	23	6 (26.1%)	0 (0.0%)	17 (73.9%)	0 (0.0%)	6	2 (33.3%)
nzl (New Zealand)	194	6 (3.1%)	21 (10.8%)	167 (86.1%)	0 (0.0%)	34	3 (8.8%)
pak (Pakistan)	224	6 (2.7%)	0 (0.0%)	218 (97.3%)	0 (0.0%)	11	2 (18.2%)
phl (Philippines)	62	6 (9.7%)	1 (1.6%)	55 (88.7%)	0 (0.0%)	11	3 (27.3%)
bgd (Bangladesh)	47	5 (10.6%)	3 (6.4%)	38 (80.9%)	1 (2.1%)	24	4 (16.7%)
btn (Bhutan)	9	5 (55.6%)	1 (11.1%)	3 (33.3%)	0 (0.0%)	4	2 (50.0%)
grd (Grenada)	13	5 (38.5%)	2 (15.4%)	6 (46.2%)	0 (0.0%)	3	2 (66.7%)
irn (Iran)	56	5 (8.9%)	9 (16.1%)	42 (75.0%)	0 (0.0%)	26	5 (19.2%)
che (Switzerland)	140	4 (2.9%)	48 (34.3%)	88 (62.9%)	0 (0.0%)	30	4 (13.3%)
chn (China)	277	4 (1.4%)	10 (3.6%)	263 (94.9%)	0 (0.0%)	32	4 (12.5%)
cri (Costa Rica)	39	4 (10.3%)	0 (0.0%)	35 (89.7%)	0 (0.0%)	10	3 (30.0%)
hun (Hungary)	105	4 (3.8%)	4 (3.8%)	97 (92.4%)	0 (0.0%)	11	4 (36.4%)
irq (Iraq)	17	4 (23.5%)	0 (0.0%)	13 (76.5%)	0 (0.0%)	9	3 (33.3%)
mex (Mexico)	85	4 (4.7%)	6 (7.1%)	75 (88.2%)	0 (0.0%)	12	3 (25.0%)
mmr (Myanmar)	35	4 (11.4%)	0 (0.0%)	31 (88.6%)	0 (0.0%)	13	3 (23.1%)
sgp (Singapore)	46	4 (8.7%)	3 (6.5%)	39 (84.8%)	0 (0.0%)	13	1 (7.7%)
bel (Belgium)	104	3 (2.9%)	23 (22.1%)	78 (75.0%)	0 (0.0%)	13	1 (7.7%)
dnk (Denmark)	116	3 (2.6%)	14 (12.1%)	99 (85.3%)	0 (0.0%)	26	2 (7.7%)
ecu (Ecuador)	14	3 (21.4%)	0 (0.0%)	11 (78.6%)	0 (0.0%)	6	2 (33.3%)
grc (Greece)	143	3 (2.1%)	26 (18.2%)	114 (79.7%)	0 (0.0%)	16	3 (18.8%)
isl (Iceland)	37	3 (8.1%)	4 (10.8%)	30 (81.1%)	0 (0.0%)	10	2 (20.0%)
mkd (Macedonia)	25	3 (12.0%)	0 (0.0%)	22 (88.0%)	0 (0.0%)	3	1 (33.3%)
tza (Tanzania)	23	3 (13.0%)	2 (8.7%)	18 (78.3%)	0 (0.0%)	12	3 (25.0%)
uga (Uganda)	6	3 (50.0%)	0 (0.0%)	3 (50.0%)	0 (0.0%)	5	2 (40.0%)
ago (Angola)	8	2 (25.0%)	0 (0.0%)	6 (75.0%)	0 (0.0%)	2	1 (50.0%)
alb (Albania)	3	2 (66.7%)	0 (0.0%)	1 (33.3%)	0 (0.0%)	2	2 (100.0%)
bgr (Bulgaria)	57	2 (3.5%)	3 (5.3%)	52 (91.2%)	0 (0.0%)	30	2 (6.7%)
fin (Finland)	77	2 (2.6%)	3 (3.9%)	72 (93.5%)	0 (0.0%)	15	2 (13.3%)
gha (Ghana)	33	2 (6.1%)	0 (0.0%)	31 (93.9%)	0 (0.0%)	7	2 (28.6%)
hrv (Croatia)	57	2 (3.5%)	0 (0.0%)	55 (96.5%)	0 (0.0%)	5	1 (20.0%)
irl (Ireland)	155	2 (1.3%)	22 (14.2%)	129 (83.2%)	2 (1.3%)	18	3 (16.7%)
jor (Jordan)	18	2 (11.1%)	0 (0.0%)	16 (88.9%)	0 (0.0%)	5	2 (40.0%)
lbn (Lebanon)	9	2 (22.2%)	0 (0.0%)	7 (77.8%)	0 (0.0%)	6	2 (33.3%)
mar (Morocco)	143	2 (1.4%)	0 (0.0%)	141 (98.6%)	0 (0.0%)	4	1 (25.0%)
mdv (Maldives)	56	2 (3.6%)	0 (0.0%)	54 (96.4%)	0 (0.0%)	1	1 (100.0%)
moz (Mozambique)	8	2 (25.0%)	4 (50.0%)	2 (25.0%)	0 (0.0%)	4	1 (25.0%)
nga (Nigeria)	20	2 (10.0%)	0 (0.0%)	18 (90.0%)	0 (0.0%)	14	2 (14.3%)
nor (Norway)	76	2 (2.6%)	9 (11.8%)	65 (85.5%)	0 (0.0%)	13	2 (15.4%)
npl (Nepal)	27	2 (7.4%)	0 (0.0%)	25 (92.6%)	0 (0.0%)	5	2 (40.0%)
prt (Portugal)	251	2 (0.8%)	89 (35.5%)	160 (63.7%)	0 (0.0%)	13	2 (15.4%)
ukr (Ukraine)	19	2 (10.5%)	7 (36.8%)	10 (52.6%)	0 (0.0%)	16	2 (12.5%)
aut (Austria)	190	1 (0.5%)	14 (7.4%)	175 (92.1%)	0 (0.0%)	18	1 (5.6%)
civ (Ivory Coast (Cote D'Ivoire))	21	1 (4.8%)	0 (0.0%)	20 (95.2%)	0 (0.0%)	3	1 (33.3%)
cuw (Curaçao)	6	1 (16.7%)	0 (0.0%)	5 (83.3%)	0 (0.0%)	1	1 (100.0%)
cym (Cayman Islands)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
cze (Czech Republic)	60	1 (1.7%)	12 (20.0%)	47 (78.3%)	0 (0.0%)	24	1 (4.2%)
fji (Fiji)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	4	1 (25.0%)
gnq (Equatorial Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
jam (Jamaica)	6	1 (16.7%)	0 (0.0%)	5 (83.3%)	0 (0.0%)	3	1 (33.3%)
ltu (Lithuania)	19	1 (5.3%)	5 (26.3%)	13 (68.4%)	0 (0.0%)	8	1 (12.5%)
lva (Latvia)	24	1 (4.2%)	1 (4.2%)	22 (91.7%)	0 (0.0%)	8	1 (12.5%)
mli (Mali)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
mng (Mongolia)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	4	1 (25.0%)
mus (Mauritius)	35	1 (2.9%)	9 (25.7%)	25 (71.4%)	0 (0.0%)	8	1 (12.5%)
ncl (New Caledonia [French])	4	1 (25.0%)	1 (25.0%)	2 (50.0%)	0 (0.0%)	3	1 (33.3%)
som (Somalia)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
srb (Serbia)	61	1 (1.6%)	1 (1.6%)	59 (96.7%)	0 (0.0%)	9	1 (11.1%)
syr (Syria)	49	1 (2.0%)	0 (0.0%)	48 (98.0%)	0 (0.0%)	1	1 (100.0%)
tgo (Togo)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
tun (Tunisia)	58	1 (1.7%)	1 (1.7%)	56 (96.6%)	0 (0.0%)	4	1 (25.0%)
twn (Taiwan)	164	1 (0.6%)	7 (4.3%)	156 (95.1%)	0 (0.0%)	7	1 (14.3%)
vir (Virgin Islands [US])	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
ala (Åland Islands)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
and (Andorra, Principality of)	7	0 (0.0%)	4 (57.1%)	3 (42.9%)	0 (0.0%)	1	0 (0.0%)
atg (Antigua and Barbuda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
aze (Azerbaijan)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
bhr (Bahrain)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	3	0 (0.0%)
bih (Bosnia and Herzegovina)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
blr (Belarus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
blz (Belize)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bmu (Bermuda)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	3	0 (0.0%)
bwa (Botswana)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
dom (Dominican Republic)	21	0 (0.0%)	1 (4.8%)	20 (95.2%)	0 (0.0%)	4	0 (0.0%)
dza (Algeria)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	2	0 (0.0%)
est (Estonia)	6	0 (0.0%)	3 (50.0%)	3 (50.0%)	0 (0.0%)	1	0 (0.0%)
eth (Ethiopia)	13	0 (0.0%)	0 (0.0%)	13 (100.0%)	0 (0.0%)	1	0 (0.0%)
fro (Faroe Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
geo (Georgia)	15	0 (0.0%)	8 (53.3%)	7 (46.7%)	0 (0.0%)	2	0 (0.0%)
glp (Guadeloupe [French])	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
gtm (Guatemala)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	4	0 (0.0%)
gum (Guam [US])	8	0 (0.0%)	2 (25.0%)	6 (75.0%)	0 (0.0%)	5	0 (0.0%)
hkg (Hong Kong)	35	0 (0.0%)	7 (20.0%)	28 (80.0%)	0 (0.0%)	17	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hti (Haiti)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
khm (Cambodia, Kingdom of)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
kwt (Kuwait)	16	0 (0.0%)	0 (0.0%)	16 (100.0%)	0 (0.0%)	2	0 (0.0%)
lbr (Liberia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
lby (Libya)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
lca (Saint Lucia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
lka (Sri Lanka)	97	0 (0.0%)	8 (8.2%)	89 (91.8%)	0 (0.0%)	4	0 (0.0%)
lux (Luxembourg)	41	0 (0.0%)	4 (9.8%)	37 (90.2%)	0 (0.0%)	6	0 (0.0%)
maf (Saint Martin)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mda (Moldova, Republic of)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mlt (Malta)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	1	0 (0.0%)
mtq (Martinique [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
omn (Oman)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	2	0 (0.0%)
pan (Panama)	39	0 (0.0%)	2 (5.1%)	37 (94.9%)	0 (0.0%)	10	0 (0.0%)
per (Peru)	26	0 (0.0%)	1 (3.8%)	25 (96.2%)	0 (0.0%)	5	0 (0.0%)
png (Papua New Guinea)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
pri (Puerto Rico)	11	0 (0.0%)	1 (9.1%)	10 (90.9%)	0 (0.0%)	4	0 (0.0%)
qat (Qatar)	21	0 (0.0%)	0 (0.0%)	21 (100.0%)	0 (0.0%)	3	0 (0.0%)
reu (Reunion [French])	39	0 (0.0%)	0 (0.0%)	39 (100.0%)	0 (0.0%)	2	0 (0.0%)
rwa (Rwanda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
slb (Solomon Islands)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	3	0 (0.0%)
svk (Slovak Republic)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	7	0 (0.0%)
svn (Slovenia)	17	0 (0.0%)	5 (29.4%)	12 (70.6%)	0 (0.0%)	7	0 (0.0%)
sxm (Sint Maarten)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	1	0 (0.0%)
syc (Seychelles)	4	0 (0.0%)	3 (75.0%)	1 (25.0%)	0 (0.0%)	3	0 (0.0%)
tto (Trinidad and Tobago)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
uzb (Uzbekistan)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
ven (Venezuela)	56	0 (0.0%)	0 (0.0%)	56 (100.0%)	0 (0.0%)	1	0 (0.0%)
wsm (Samoa)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
zwe (Zimbabwe)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	3	0 (0.0%)

Center for Applied Internet Data Analysis    |   Based at the University of California's San Diego Supercomputer Center

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