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)	2641	412 (15.6%)	563 (21.3%)	1632 (61.8%)	34 (1.3%)	573	242 (42.2%)
ind (India)	576	211 (36.6%)	57 (9.9%)	306 (53.1%)	2 (0.3%)	45	19 (42.2%)
usa (United States)	1869	164 (8.8%)	540 (28.9%)	1160 (62.1%)	5 (0.3%)	326	72 (22.1%)
egy (Egypt)	238	79 (33.2%)	0 (0.0%)	159 (66.8%)	0 (0.0%)	6	3 (50.0%)
chl (Chile)	293	61 (20.8%)	16 (5.5%)	216 (73.7%)	0 (0.0%)	23	6 (26.1%)
grc (Greece)	119	35 (29.4%)	10 (8.4%)	74 (62.2%)	0 (0.0%)	8	1 (12.5%)
zaf (South Africa)	194	33 (17.0%)	11 (5.7%)	150 (77.3%)	0 (0.0%)	44	18 (40.9%)
tur (Turkey)	686	31 (4.5%)	63 (9.2%)	592 (86.3%)	0 (0.0%)	83	17 (20.5%)
ita (Italy)	266	30 (11.3%)	20 (7.5%)	216 (81.2%)	0 (0.0%)	49	14 (28.6%)
gbr (United Kingdom)	313	25 (8.0%)	60 (19.2%)	228 (72.8%)	0 (0.0%)	76	15 (19.7%)
idn (Indonesia)	44	23 (52.3%)	6 (13.6%)	15 (34.1%)	0 (0.0%)	24	12 (50.0%)
rus (Russian Federation)	145	21 (14.5%)	16 (11.0%)	108 (74.5%)	0 (0.0%)	49	11 (22.4%)
chn (China)	456	20 (4.4%)	150 (32.9%)	285 (62.5%)	1 (0.2%)	25	9 (36.0%)
nld (Netherlands)	366	20 (5.5%)	83 (22.7%)	260 (71.0%)	3 (0.8%)	73	13 (17.8%)
arg (Argentina)	102	17 (16.7%)	11 (10.8%)	73 (71.6%)	1 (1.0%)	22	6 (27.3%)
ven (Venezuela)	89	16 (18.0%)	7 (7.9%)	66 (74.2%)	0 (0.0%)	15	5 (33.3%)
ukr (Ukraine)	51	16 (31.4%)	16 (31.4%)	19 (37.3%)	0 (0.0%)	26	8 (30.8%)
can (Canada)	192	15 (7.8%)	28 (14.6%)	149 (77.6%)	0 (0.0%)	42	7 (16.7%)
aus (Australia)	143	15 (10.5%)	26 (18.2%)	102 (71.3%)	0 (0.0%)	37	12 (32.4%)
col (Colombia)	78	15 (19.2%)	5 (6.4%)	58 (74.4%)	0 (0.0%)	13	6 (46.2%)
pry (Paraguay)	31	15 (48.4%)	6 (19.4%)	9 (29.0%)	1 (3.2%)	13	9 (69.2%)
ken (Kenya)	125	14 (11.2%)	7 (5.6%)	103 (82.4%)	1 (0.8%)	20	9 (45.0%)
vnm (Vietnam)	98	14 (14.3%)	8 (8.2%)	76 (77.6%)	0 (0.0%)	11	6 (54.5%)
twn (Taiwan)	96	14 (14.6%)	3 (3.1%)	79 (82.3%)	0 (0.0%)	7	2 (28.6%)
npl (Nepal)	54	14 (25.9%)	9 (16.7%)	31 (57.4%)	0 (0.0%)	11	5 (45.5%)
dnk (Denmark)	28	14 (50.0%)	5 (17.9%)	9 (32.1%)	0 (0.0%)	9	3 (33.3%)
tha (Thailand)	183	13 (7.1%)	6 (3.3%)	163 (89.1%)	1 (0.5%)	19	8 (42.1%)
mdv (Maldives)	17	12 (70.6%)	1 (5.9%)	4 (23.5%)	0 (0.0%)	3	2 (66.7%)
mex (Mexico)	279	11 (3.9%)	21 (7.5%)	247 (88.5%)	0 (0.0%)	23	6 (26.1%)
phl (Philippines)	130	11 (8.5%)	19 (14.6%)	100 (76.9%)	0 (0.0%)	19	6 (31.6%)
isr (Israel)	119	10 (8.4%)	18 (15.1%)	91 (76.5%)	0 (0.0%)	10	1 (10.0%)
jpn (Japan)	227	9 (4.0%)	44 (19.4%)	174 (76.7%)	0 (0.0%)	39	7 (17.9%)
rou (Romania)	92	9 (9.8%)	37 (40.2%)	46 (50.0%)	0 (0.0%)	18	2 (11.1%)
hkg (Hong Kong)	34	9 (26.5%)	10 (29.4%)	15 (44.1%)	0 (0.0%)	19	8 (42.1%)
tza (Tanzania)	24	8 (33.3%)	1 (4.2%)	15 (62.5%)	0 (0.0%)	13	7 (53.8%)
pan (Panama)	62	7 (11.3%)	2 (3.2%)	53 (85.5%)	0 (0.0%)	6	4 (66.7%)
bol (Bolivia)	55	7 (12.7%)	6 (10.9%)	42 (76.4%)	0 (0.0%)	4	2 (50.0%)
irn (Iran)	247	6 (2.4%)	6 (2.4%)	235 (95.1%)	0 (0.0%)	19	4 (21.1%)
tun (Tunisia)	6	6 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
deu (Germany)	462	5 (1.1%)	87 (18.8%)	370 (80.1%)	0 (0.0%)	66	5 (7.6%)
ury (Uruguay)	199	5 (2.5%)	12 (6.0%)	181 (91.0%)	1 (0.5%)	6	3 (50.0%)
bgd (Bangladesh)	20	5 (25.0%)	1 (5.0%)	14 (70.0%)	0 (0.0%)	11	4 (36.4%)
mus (Mauritius)	15	5 (33.3%)	0 (0.0%)	10 (66.7%)	0 (0.0%)	12	4 (33.3%)
fra (France)	163	4 (2.5%)	47 (28.8%)	112 (68.7%)	0 (0.0%)	23	4 (17.4%)
bgr (Bulgaria)	43	4 (9.3%)	5 (11.6%)	34 (79.1%)	0 (0.0%)	21	3 (14.3%)
dza (Algeria)	19	4 (21.1%)	0 (0.0%)	15 (78.9%)	0 (0.0%)	2	1 (50.0%)
btn (Bhutan)	8	4 (50.0%)	1 (12.5%)	3 (37.5%)	0 (0.0%)	1	1 (100.0%)
esp (Spain)	109	3 (2.8%)	10 (9.2%)	96 (88.1%)	0 (0.0%)	17	2 (11.8%)
swe (Sweden)	64	3 (4.7%)	16 (25.0%)	45 (70.3%)	0 (0.0%)	22	3 (13.6%)
srb (Serbia)	37	3 (8.1%)	3 (8.1%)	31 (83.8%)	0 (0.0%)	11	2 (18.2%)
are (United Arab Emirates)	32	3 (9.4%)	5 (15.6%)	23 (71.9%)	1 (3.1%)	5	2 (40.0%)
ecu (Ecuador)	28	3 (10.7%)	2 (7.1%)	22 (78.6%)	1 (3.6%)	10	2 (20.0%)
sau (Saudi Arabia)	301	2 (0.7%)	31 (10.3%)	266 (88.4%)	2 (0.7%)	9	2 (22.2%)
pol (Poland)	164	2 (1.2%)	10 (6.1%)	152 (92.7%)	0 (0.0%)	26	1 (3.8%)
cze (Czech Republic)	31	2 (6.5%)	1 (3.2%)	28 (90.3%)	0 (0.0%)	12	2 (16.7%)
mda (Moldova, Republic of)	16	2 (12.5%)	4 (25.0%)	9 (56.3%)	1 (6.3%)	8	2 (25.0%)
cri (Costa Rica)	10	2 (20.0%)	0 (0.0%)	8 (80.0%)	0 (0.0%)	7	2 (28.6%)
est (Estonia)	5	2 (40.0%)	2 (40.0%)	1 (20.0%)	0 (0.0%)	3	2 (66.7%)
sur (Suriname)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
prt (Portugal)	83	1 (1.2%)	20 (24.1%)	61 (73.5%)	1 (1.2%)	9	2 (22.2%)
bhr (Bahrain)	54	1 (1.9%)	5 (9.3%)	48 (88.9%)	0 (0.0%)	4	1 (25.0%)
che (Switzerland)	53	1 (1.9%)	14 (26.4%)	38 (71.7%)	0 (0.0%)	19	1 (5.3%)
nzl (New Zealand)	51	1 (2.0%)	7 (13.7%)	43 (84.3%)	0 (0.0%)	10	1 (10.0%)
hun (Hungary)	33	1 (3.0%)	12 (36.4%)	20 (60.6%)	0 (0.0%)	12	1 (8.3%)
eth (Ethiopia)	22	1 (4.5%)	0 (0.0%)	21 (95.5%)	0 (0.0%)	1	1 (100.0%)
irq (Iraq)	10	1 (10.0%)	0 (0.0%)	9 (90.0%)	0 (0.0%)	5	1 (20.0%)
lux (Luxembourg)	9	1 (11.1%)	6 (66.7%)	2 (22.2%)	0 (0.0%)	4	1 (25.0%)
per (Peru)	9	1 (11.1%)	1 (11.1%)	6 (66.7%)	1 (11.1%)	7	2 (28.6%)
gum (Guam [US])	5	1 (20.0%)	2 (40.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
isl (Iceland)	4	1 (25.0%)	1 (25.0%)	2 (50.0%)	0 (0.0%)	3	1 (33.3%)
jor (Jordan)	4	1 (25.0%)	1 (25.0%)	2 (50.0%)	0 (0.0%)	3	1 (33.3%)
kwt (Kuwait)	3	1 (33.3%)	2 (66.7%)	0 (0.0%)	0 (0.0%)	2	1 (50.0%)
mkd (Macedonia)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
rwa (Rwanda)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
abw (Aruba)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
atg (Antigua and Barbuda)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
bhs (Bahamas)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
gin (Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
kna (Saint Kitts and Nevis)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
png (Papua New Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
ago (Angola)	140	0 (0.0%)	3 (2.1%)	137 (97.9%)	0 (0.0%)	5	0 (0.0%)
mar (Morocco)	118	0 (0.0%)	1 (0.8%)	117 (99.2%)	0 (0.0%)	6	0 (0.0%)
kor (South Korea)	83	0 (0.0%)	44 (53.0%)	39 (47.0%)	0 (0.0%)	11	0 (0.0%)
aut (Austria)	76	0 (0.0%)	11 (14.5%)	65 (85.5%)	0 (0.0%)	15	0 (0.0%)
irl (Ireland)	65	0 (0.0%)	16 (24.6%)	49 (75.4%)	0 (0.0%)	16	0 (0.0%)
pak (Pakistan)	59	0 (0.0%)	4 (6.8%)	55 (93.2%)	0 (0.0%)	7	0 (0.0%)
lka (Sri Lanka)	42	0 (0.0%)	4 (9.5%)	38 (90.5%)	0 (0.0%)	3	0 (0.0%)
pse (Palestinian Territory, Occupied)	36	0 (0.0%)	0 (0.0%)	36 (100.0%)	0 (0.0%)	1	0 (0.0%)
sgp (Singapore)	35	0 (0.0%)	11 (31.4%)	24 (68.6%)	0 (0.0%)	15	0 (0.0%)
bel (Belgium)	33	0 (0.0%)	7 (21.2%)	26 (78.8%)	0 (0.0%)	7	0 (0.0%)
blr (Belarus)	32	0 (0.0%)	0 (0.0%)	32 (100.0%)	0 (0.0%)	4	0 (0.0%)
nga (Nigeria)	32	0 (0.0%)	2 (6.3%)	30 (93.8%)	0 (0.0%)	5	0 (0.0%)
gha (Ghana)	31	0 (0.0%)	0 (0.0%)	31 (100.0%)	0 (0.0%)	3	0 (0.0%)
ltu (Lithuania)	29	0 (0.0%)	2 (6.9%)	27 (93.1%)	0 (0.0%)	5	0 (0.0%)
nor (Norway)	27	0 (0.0%)	9 (33.3%)	18 (66.7%)	0 (0.0%)	10	0 (0.0%)
svn (Slovenia)	25	0 (0.0%)	1 (4.0%)	24 (96.0%)	0 (0.0%)	7	0 (0.0%)
uzb (Uzbekistan)	24	0 (0.0%)	1 (4.2%)	23 (95.8%)	0 (0.0%)	6	0 (0.0%)
dom (Dominican Republic)	23	0 (0.0%)	5 (21.7%)	18 (78.3%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	16	0 (0.0%)	11 (68.8%)	5 (31.3%)	0 (0.0%)	6	0 (0.0%)
svk (Slovak Republic)	16	0 (0.0%)	2 (12.5%)	14 (87.5%)	0 (0.0%)	8	0 (0.0%)
aze (Azerbaijan)	15	0 (0.0%)	0 (0.0%)	15 (100.0%)	0 (0.0%)	4	0 (0.0%)
kaz (Kazakhstan)	15	0 (0.0%)	2 (13.3%)	13 (86.7%)	0 (0.0%)	6	0 (0.0%)
som (Somalia)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	6	0 (0.0%)
mmr (Myanmar)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	4	0 (0.0%)
mwi (Malawi)	9	0 (0.0%)	2 (22.2%)	7 (77.8%)	0 (0.0%)	4	0 (0.0%)
geo (Georgia)	8	0 (0.0%)	1 (12.5%)	7 (87.5%)	0 (0.0%)	2	0 (0.0%)
qat (Qatar)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	1	0 (0.0%)
syr (Syria)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	1	0 (0.0%)
khm (Cambodia, Kingdom of)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	6	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	5 (71.4%)	1 (14.3%)	1 (14.3%)	2	1 (50.0%)
fji (Fiji)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	2	0 (0.0%)
mys (Malaysia)	6	0 (0.0%)	2 (33.3%)	4 (66.7%)	0 (0.0%)	4	0 (0.0%)
reu (Reunion [French])	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	4	0 (0.0%)
cmr (Cameroon)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	0 (0.0%)
hrv (Croatia)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	1	0 (0.0%)
nam (Namibia)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	1	0 (0.0%)
pri (Puerto Rico)	4	0 (0.0%)	3 (75.0%)	1 (25.0%)	0 (0.0%)	2	0 (0.0%)
bih (Bosnia and Herzegovina)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	3	0 (0.0%)
lva (Latvia)	3	0 (0.0%)	2 (66.7%)	1 (33.3%)	0 (0.0%)	2	0 (0.0%)
mlt (Malta)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
alb (Albania)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cod (Congo, The Democratic Republic of the)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
dma (Dominica)	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%)	1	0 (0.0%)
mli (Mali)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mrt (Mauritania)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
syc (Seychelles)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
tto (Trinidad and Tobago)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lao (Laos)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lbn (Lebanon)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lca (Saint Lucia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lie (Liechtenstein)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
moz (Mozambique)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
omn (Oman)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
uga (Uganda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
vut (Vanuatu)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)