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)	2014	366 (18.2%)	200 (9.9%)	1432 (71.1%)	16 (0.8%)	324	139 (42.9%)
usa (United States)	5457	250 (4.6%)	1095 (20.1%)	4111 (75.3%)	1 (0.0%)	565	123 (21.8%)
ind (India)	1690	219 (13.0%)	130 (7.7%)	1326 (78.5%)	15 (0.9%)	53	15 (28.3%)
ita (Italy)	363	48 (13.2%)	20 (5.5%)	294 (81.0%)	1 (0.3%)	35	12 (34.3%)
arg (Argentina)	191	43 (22.5%)	16 (8.4%)	132 (69.1%)	0 (0.0%)	20	9 (45.0%)
kor (South Korea)	778	39 (5.0%)	454 (58.4%)	285 (36.6%)	0 (0.0%)	43	11 (25.6%)
can (Canada)	769	38 (4.9%)	87 (11.3%)	644 (83.7%)	0 (0.0%)	83	17 (20.5%)
mys (Malaysia)	312	37 (11.9%)	31 (9.9%)	244 (78.2%)	0 (0.0%)	12	3 (25.0%)
gbr (United Kingdom)	1246	33 (2.6%)	133 (10.7%)	1078 (86.5%)	2 (0.2%)	113	24 (21.2%)
tha (Thailand)	476	30 (6.3%)	19 (4.0%)	427 (89.7%)	0 (0.0%)	21	5 (23.8%)
chl (Chile)	161	28 (17.4%)	10 (6.2%)	123 (76.4%)	0 (0.0%)	30	12 (40.0%)
bol (Bolivia)	106	25 (23.6%)	7 (6.6%)	73 (68.9%)	1 (0.9%)	4	1 (25.0%)
jpn (Japan)	365	22 (6.0%)	43 (11.8%)	298 (81.6%)	2 (0.5%)	50	13 (26.0%)
nld (Netherlands)	629	22 (3.5%)	136 (21.6%)	471 (74.9%)	0 (0.0%)	104	16 (15.4%)
deu (Germany)	1750	21 (1.2%)	334 (19.1%)	1395 (79.7%)	0 (0.0%)	78	16 (20.5%)
egy (Egypt)	130	20 (15.4%)	1 (0.8%)	109 (83.8%)	0 (0.0%)	4	2 (50.0%)
isr (Israel)	150	18 (12.0%)	6 (4.0%)	126 (84.0%)	0 (0.0%)	16	5 (31.3%)
are (United Arab Emirates)	57	16 (28.1%)	2 (3.5%)	39 (68.4%)	0 (0.0%)	5	2 (40.0%)
aus (Australia)	799	16 (2.0%)	60 (7.5%)	723 (90.5%)	0 (0.0%)	61	12 (19.7%)
rus (Russian Federation)	153	16 (10.5%)	27 (17.6%)	109 (71.2%)	1 (0.7%)	72	9 (12.5%)
swe (Sweden)	326	16 (4.9%)	33 (10.1%)	276 (84.7%)	1 (0.3%)	51	11 (21.6%)
pol (Poland)	164	14 (8.5%)	9 (5.5%)	141 (86.0%)	0 (0.0%)	35	8 (22.9%)
vnm (Vietnam)	95	14 (14.7%)	8 (8.4%)	73 (76.8%)	0 (0.0%)	9	5 (55.6%)
rou (Romania)	73	13 (17.8%)	6 (8.2%)	54 (74.0%)	0 (0.0%)	16	6 (37.5%)
fra (France)	455	12 (2.6%)	55 (12.1%)	385 (84.6%)	3 (0.7%)	51	9 (17.6%)
ken (Kenya)	59	12 (20.3%)	2 (3.4%)	45 (76.3%)	0 (0.0%)	9	5 (55.6%)
tur (Turkey)	207	12 (5.8%)	4 (1.9%)	191 (92.3%)	0 (0.0%)	22	6 (27.3%)
bgd (Bangladesh)	46	9 (19.6%)	2 (4.3%)	34 (73.9%)	1 (2.2%)	24	7 (29.2%)
ury (Uruguay)	351	9 (2.6%)	9 (2.6%)	330 (94.0%)	3 (0.9%)	10	5 (50.0%)
esp (Spain)	271	8 (3.0%)	7 (2.6%)	255 (94.1%)	1 (0.4%)	29	6 (20.7%)
idn (Indonesia)	54	8 (14.8%)	0 (0.0%)	46 (85.2%)	0 (0.0%)	21	7 (33.3%)
zmb (Zambia)	16	8 (50.0%)	0 (0.0%)	8 (50.0%)	0 (0.0%)	3	1 (33.3%)
zaf (South Africa)	352	7 (2.0%)	30 (8.5%)	315 (89.5%)	0 (0.0%)	39	6 (15.4%)
irn (Iran)	52	6 (11.5%)	9 (17.3%)	36 (69.2%)	1 (1.9%)	26	7 (26.9%)
mmr (Myanmar)	37	6 (16.2%)	0 (0.0%)	31 (83.8%)	0 (0.0%)	14	4 (28.6%)
nzl (New Zealand)	190	6 (3.2%)	23 (12.1%)	161 (84.7%)	0 (0.0%)	32	3 (9.4%)
pak (Pakistan)	145	6 (4.1%)	1 (0.7%)	137 (94.5%)	1 (0.7%)	11	2 (18.2%)
sen (Senegal)	29	6 (20.7%)	0 (0.0%)	23 (79.3%)	0 (0.0%)	1	1 (100.0%)
tza (Tanzania)	28	6 (21.4%)	2 (7.1%)	20 (71.4%)	0 (0.0%)	13	6 (46.2%)
btn (Bhutan)	12	5 (41.7%)	3 (25.0%)	4 (33.3%)	0 (0.0%)	5	2 (40.0%)
col (Colombia)	28	5 (17.9%)	1 (3.6%)	22 (78.6%)	0 (0.0%)	6	2 (33.3%)
grd (Grenada)	13	5 (38.5%)	2 (15.4%)	6 (46.2%)	0 (0.0%)	3	2 (66.7%)
phl (Philippines)	43	5 (11.6%)	1 (2.3%)	37 (86.0%)	0 (0.0%)	9	3 (33.3%)
sgp (Singapore)	46	5 (10.9%)	3 (6.5%)	38 (82.6%)	0 (0.0%)	16	2 (12.5%)
chn (China)	267	4 (1.5%)	10 (3.7%)	253 (94.8%)	0 (0.0%)	29	4 (13.8%)
hun (Hungary)	90	4 (4.4%)	6 (6.7%)	80 (88.9%)	0 (0.0%)	11	4 (36.4%)
ltu (Lithuania)	25	4 (16.0%)	8 (32.0%)	13 (52.0%)	0 (0.0%)	8	2 (25.0%)
mex (Mexico)	93	4 (4.3%)	6 (6.5%)	83 (89.2%)	0 (0.0%)	13	3 (23.1%)
ukr (Ukraine)	23	4 (17.4%)	9 (39.1%)	10 (43.5%)	0 (0.0%)	18	4 (22.2%)
che (Switzerland)	150	3 (2.0%)	55 (36.7%)	92 (61.3%)	0 (0.0%)	30	3 (10.0%)
cri (Costa Rica)	36	3 (8.3%)	0 (0.0%)	33 (91.7%)	0 (0.0%)	10	3 (30.0%)
grc (Greece)	141	3 (2.1%)	27 (19.1%)	111 (78.7%)	0 (0.0%)	16	3 (18.8%)
isl (Iceland)	41	3 (7.3%)	5 (12.2%)	33 (80.5%)	0 (0.0%)	11	2 (18.2%)
mkd (Macedonia)	25	3 (12.0%)	0 (0.0%)	22 (88.0%)	0 (0.0%)	3	1 (33.3%)
nga (Nigeria)	18	3 (16.7%)	0 (0.0%)	15 (83.3%)	0 (0.0%)	12	3 (25.0%)
sau (Saudi Arabia)	23	3 (13.0%)	1 (4.3%)	19 (82.6%)	0 (0.0%)	3	1 (33.3%)
uga (Uganda)	6	3 (50.0%)	0 (0.0%)	3 (50.0%)	0 (0.0%)	5	2 (40.0%)
ago (Angola)	9	2 (22.2%)	0 (0.0%)	7 (77.8%)	0 (0.0%)	2	1 (50.0%)
alb (Albania)	4	2 (50.0%)	0 (0.0%)	2 (50.0%)	0 (0.0%)	3	2 (66.7%)
bel (Belgium)	83	2 (2.4%)	19 (22.9%)	62 (74.7%)	0 (0.0%)	11	2 (18.2%)
bgr (Bulgaria)	58	2 (3.4%)	7 (12.1%)	49 (84.5%)	0 (0.0%)	29	2 (6.9%)
cze (Czech Republic)	53	2 (3.8%)	8 (15.1%)	43 (81.1%)	0 (0.0%)	23	2 (8.7%)
dnk (Denmark)	97	2 (2.1%)	8 (8.2%)	87 (89.7%)	0 (0.0%)	21	2 (9.5%)
fin (Finland)	75	2 (2.7%)	3 (4.0%)	70 (93.3%)	0 (0.0%)	14	2 (14.3%)
gnq (Equatorial Guinea)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2	2 (100.0%)
hrv (Croatia)	53	2 (3.8%)	0 (0.0%)	51 (96.2%)	0 (0.0%)	7	1 (14.3%)
jor (Jordan)	22	2 (9.1%)	0 (0.0%)	20 (90.9%)	0 (0.0%)	5	2 (40.0%)
lbn (Lebanon)	9	2 (22.2%)	0 (0.0%)	7 (77.8%)	0 (0.0%)	5	2 (40.0%)
mar (Morocco)	138	2 (1.4%)	0 (0.0%)	136 (98.6%)	0 (0.0%)	3	1 (33.3%)
mdv (Maldives)	55	2 (3.6%)	0 (0.0%)	53 (96.4%)	0 (0.0%)	1	1 (100.0%)
nor (Norway)	72	2 (2.8%)	9 (12.5%)	61 (84.7%)	0 (0.0%)	13	2 (15.4%)
prt (Portugal)	160	2 (1.3%)	6 (3.8%)	152 (95.0%)	0 (0.0%)	11	2 (18.2%)
srb (Serbia)	56	2 (3.6%)	1 (1.8%)	53 (94.6%)	0 (0.0%)	12	2 (16.7%)
tun (Tunisia)	53	2 (3.8%)	1 (1.9%)	50 (94.3%)	0 (0.0%)	5	2 (40.0%)
twn (Taiwan)	161	2 (1.2%)	6 (3.7%)	153 (95.0%)	0 (0.0%)	6	1 (16.7%)
aut (Austria)	194	1 (0.5%)	15 (7.7%)	178 (91.8%)	0 (0.0%)	19	1 (5.3%)
civ (Ivory Coast (Cote D'Ivoire))	19	1 (5.3%)	0 (0.0%)	18 (94.7%)	0 (0.0%)	3	1 (33.3%)
cuw (Curaçao)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	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%)
ecu (Ecuador)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
fji (Fiji)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	2	1 (50.0%)
gha (Ghana)	27	1 (3.7%)	0 (0.0%)	26 (96.3%)	0 (0.0%)	7	1 (14.3%)
gtm (Guatemala)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	0 (0.0%)	5	1 (20.0%)
hkg (Hong Kong)	32	1 (3.1%)	5 (15.6%)	26 (81.3%)	0 (0.0%)	17	1 (5.9%)
irl (Ireland)	136	1 (0.7%)	24 (17.6%)	111 (81.6%)	0 (0.0%)	14	1 (7.1%)
irq (Iraq)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	5	1 (20.0%)
jam (Jamaica)	6	1 (16.7%)	0 (0.0%)	5 (83.3%)	0 (0.0%)	3	1 (33.3%)
lva (Latvia)	18	1 (5.6%)	1 (5.6%)	16 (88.9%)	0 (0.0%)	7	1 (14.3%)
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%)
moz (Mozambique)	7	1 (14.3%)	4 (57.1%)	2 (28.6%)	0 (0.0%)	4	1 (25.0%)
mus (Mauritius)	24	1 (4.2%)	2 (8.3%)	21 (87.5%)	0 (0.0%)	5	1 (20.0%)
ncl (New Caledonia [French])	4	1 (25.0%)	1 (25.0%)	2 (50.0%)	0 (0.0%)	3	1 (33.3%)
npl (Nepal)	16	1 (6.3%)	0 (0.0%)	15 (93.8%)	0 (0.0%)	4	1 (25.0%)
som (Somalia)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
syr (Syria)	60	1 (1.7%)	0 (0.0%)	59 (98.3%)	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%)
vir (Virgin Islands [US])	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
zwe (Zimbabwe)	8	1 (12.5%)	0 (0.0%)	7 (87.5%)	0 (0.0%)	3	1 (33.3%)
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)	23	0 (0.0%)	0 (0.0%)	23 (100.0%)	0 (0.0%)	3	0 (0.0%)
bih (Bosnia and Herzegovina)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	4	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)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
brb (Barbados)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	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)	11	0 (0.0%)	1 (9.1%)	10 (90.9%)	0 (0.0%)	3	0 (0.0%)
dza (Algeria)	18	0 (0.0%)	0 (0.0%)	18 (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)	11	0 (0.0%)	0 (0.0%)	11 (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)	13	0 (0.0%)	8 (61.5%)	5 (38.5%)	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%)
gum (Guam [US])	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
kwt (Kuwait)	13	0 (0.0%)	0 (0.0%)	13 (100.0%)	0 (0.0%)	1	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%)
lka (Sri Lanka)	99	0 (0.0%)	8 (8.1%)	91 (91.9%)	0 (0.0%)	4	0 (0.0%)
lux (Luxembourg)	36	0 (0.0%)	3 (8.3%)	33 (91.7%)	0 (0.0%)	5	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)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	7	0 (0.0%)	0 (0.0%)	7 (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)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	2	0 (0.0%)
pan (Panama)	34	0 (0.0%)	2 (5.9%)	32 (94.1%)	0 (0.0%)	9	0 (0.0%)
per (Peru)	24	0 (0.0%)	1 (4.2%)	23 (95.8%)	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)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	2	0 (0.0%)
pse (Palestinian Territory, Occupied)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	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])	35	0 (0.0%)	0 (0.0%)	35 (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)	13	0 (0.0%)	0 (0.0%)	13 (100.0%)	0 (0.0%)	8	0 (0.0%)
svn (Slovenia)	19	0 (0.0%)	5 (26.3%)	14 (73.7%)	0 (0.0%)	10	0 (0.0%)
sxm (Sint Maarten)	2	0 (0.0%)	0 (0.0%)	2 (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%)
ton (Tonga)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
tto (Trinidad and Tobago)	2	0 (0.0%)	0 (0.0%)	2 (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)	67	0 (0.0%)	0 (0.0%)	67 (100.0%)	0 (0.0%)	2	0 (0.0%)
wsm (Samoa)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)

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

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