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)	2565	417 (16.3%)	547 (21.3%)	1565 (61.0%)	36 (1.4%)	569	246 (43.2%)
ind (India)	576	258 (44.8%)	67 (11.6%)	248 (43.1%)	3 (0.5%)	46	17 (37.0%)
usa (United States)	1944	167 (8.6%)	560 (28.8%)	1217 (62.6%)	0 (0.0%)	336	70 (20.8%)
chl (Chile)	321	61 (19.0%)	13 (4.0%)	247 (76.9%)	0 (0.0%)	25	7 (28.0%)
egy (Egypt)	168	56 (33.3%)	0 (0.0%)	112 (66.7%)	0 (0.0%)	6	3 (50.0%)
zaf (South Africa)	202	34 (16.8%)	11 (5.4%)	156 (77.2%)	1 (0.5%)	44	19 (43.2%)
grc (Greece)	116	30 (25.9%)	10 (8.6%)	76 (65.5%)	0 (0.0%)	7	1 (14.3%)
ita (Italy)	306	28 (9.2%)	20 (6.5%)	257 (84.0%)	1 (0.3%)	50	13 (26.0%)
tur (Turkey)	620	27 (4.4%)	64 (10.3%)	529 (85.3%)	0 (0.0%)	82	16 (19.5%)
arg (Argentina)	133	25 (18.8%)	13 (9.8%)	94 (70.7%)	1 (0.8%)	24	6 (25.0%)
gbr (United Kingdom)	347	23 (6.6%)	64 (18.4%)	260 (74.9%)	0 (0.0%)	69	15 (21.7%)
idn (Indonesia)	46	22 (47.8%)	10 (21.7%)	14 (30.4%)	0 (0.0%)	25	12 (48.0%)
nld (Netherlands)	350	22 (6.3%)	75 (21.4%)	249 (71.1%)	4 (1.1%)	72	15 (20.8%)
col (Colombia)	89	21 (23.6%)	4 (4.5%)	64 (71.9%)	0 (0.0%)	17	8 (47.1%)
chn (China)	391	17 (4.3%)	100 (25.6%)	274 (70.1%)	0 (0.0%)	26	9 (34.6%)
pry (Paraguay)	37	17 (45.9%)	8 (21.6%)	12 (32.4%)	0 (0.0%)	14	10 (71.4%)
npl (Nepal)	52	16 (30.8%)	9 (17.3%)	27 (51.9%)	0 (0.0%)	10	5 (50.0%)
ukr (Ukraine)	42	16 (38.1%)	7 (16.7%)	19 (45.2%)	0 (0.0%)	24	7 (29.2%)
ven (Venezuela)	87	16 (18.4%)	8 (9.2%)	63 (72.4%)	0 (0.0%)	14	5 (35.7%)
rus (Russian Federation)	122	15 (12.3%)	14 (11.5%)	93 (76.2%)	0 (0.0%)	40	10 (25.0%)
tha (Thailand)	147	15 (10.2%)	6 (4.1%)	126 (85.7%)	0 (0.0%)	18	9 (50.0%)
isr (Israel)	130	14 (10.8%)	18 (13.8%)	98 (75.4%)	0 (0.0%)	10	1 (10.0%)
mdv (Maldives)	19	14 (73.7%)	1 (5.3%)	4 (21.1%)	0 (0.0%)	3	2 (66.7%)
vnm (Vietnam)	98	14 (14.3%)	7 (7.1%)	77 (78.6%)	0 (0.0%)	11	6 (54.5%)
can (Canada)	177	12 (6.8%)	25 (14.1%)	140 (79.1%)	0 (0.0%)	38	6 (15.8%)
dnk (Denmark)	25	12 (48.0%)	5 (20.0%)	8 (32.0%)	0 (0.0%)	9	3 (33.3%)
ken (Kenya)	109	12 (11.0%)	8 (7.3%)	89 (81.7%)	0 (0.0%)	19	6 (31.6%)
twn (Taiwan)	101	12 (11.9%)	2 (2.0%)	87 (86.1%)	0 (0.0%)	6	2 (33.3%)
phl (Philippines)	126	11 (8.7%)	16 (12.7%)	99 (78.6%)	0 (0.0%)	19	6 (31.6%)
rou (Romania)	97	11 (11.3%)	38 (39.2%)	48 (49.5%)	0 (0.0%)	17	2 (11.8%)
aus (Australia)	150	9 (6.0%)	29 (19.3%)	112 (74.7%)	0 (0.0%)	35	8 (22.9%)
jpn (Japan)	238	8 (3.4%)	45 (18.9%)	185 (77.7%)	0 (0.0%)	41	6 (14.6%)
tza (Tanzania)	25	8 (32.0%)	1 (4.0%)	16 (64.0%)	0 (0.0%)	13	7 (53.8%)
hkg (Hong Kong)	28	6 (21.4%)	9 (32.1%)	12 (42.9%)	1 (3.6%)	17	7 (41.2%)
mex (Mexico)	229	6 (2.6%)	21 (9.2%)	202 (88.2%)	0 (0.0%)	22	5 (22.7%)
pan (Panama)	63	6 (9.5%)	2 (3.2%)	55 (87.3%)	0 (0.0%)	6	4 (66.7%)
bgd (Bangladesh)	19	5 (26.3%)	0 (0.0%)	14 (73.7%)	0 (0.0%)	10	4 (40.0%)
ecu (Ecuador)	27	5 (18.5%)	2 (7.4%)	20 (74.1%)	0 (0.0%)	10	2 (20.0%)
mus (Mauritius)	15	5 (33.3%)	0 (0.0%)	10 (66.7%)	0 (0.0%)	12	4 (33.3%)
sau (Saudi Arabia)	347	5 (1.4%)	29 (8.4%)	309 (89.0%)	4 (1.2%)	9	2 (22.2%)
tun (Tunisia)	5	5 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
ury (Uruguay)	142	5 (3.5%)	10 (7.0%)	127 (89.4%)	0 (0.0%)	6	2 (33.3%)
bol (Bolivia)	51	4 (7.8%)	6 (11.8%)	41 (80.4%)	0 (0.0%)	4	2 (50.0%)
btn (Bhutan)	8	4 (50.0%)	1 (12.5%)	3 (37.5%)	0 (0.0%)	1	1 (100.0%)
deu (Germany)	496	4 (0.8%)	88 (17.7%)	404 (81.5%)	0 (0.0%)	72	4 (5.6%)
dza (Algeria)	11	4 (36.4%)	0 (0.0%)	7 (63.6%)	0 (0.0%)	2	1 (50.0%)
fra (France)	170	4 (2.4%)	53 (31.2%)	113 (66.5%)	0 (0.0%)	28	3 (10.7%)
irn (Iran)	241	4 (1.7%)	8 (3.3%)	229 (95.0%)	0 (0.0%)	16	3 (18.8%)
are (United Arab Emirates)	29	3 (10.3%)	6 (20.7%)	19 (65.5%)	1 (3.4%)	6	2 (33.3%)
bgr (Bulgaria)	39	3 (7.7%)	5 (12.8%)	31 (79.5%)	0 (0.0%)	18	2 (11.1%)
esp (Spain)	113	3 (2.7%)	8 (7.1%)	102 (90.3%)	0 (0.0%)	15	2 (13.3%)
mda (Moldova, Republic of)	27	3 (11.1%)	6 (22.2%)	17 (63.0%)	1 (3.7%)	9	3 (33.3%)
pol (Poland)	183	3 (1.6%)	13 (7.1%)	167 (91.3%)	0 (0.0%)	34	2 (5.9%)
srb (Serbia)	43	3 (7.0%)	3 (7.0%)	37 (86.0%)	0 (0.0%)	10	2 (20.0%)
swe (Sweden)	64	3 (4.7%)	16 (25.0%)	45 (70.3%)	0 (0.0%)	23	3 (13.0%)
cri (Costa Rica)	15	2 (13.3%)	1 (6.7%)	12 (80.0%)	0 (0.0%)	8	2 (25.0%)
gum (Guam [US])	11	2 (18.2%)	5 (45.5%)	4 (36.4%)	0 (0.0%)	4	1 (25.0%)
sur (Suriname)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
uga (Uganda)	9	2 (22.2%)	0 (0.0%)	7 (77.8%)	0 (0.0%)	3	2 (66.7%)
ago (Angola)	152	1 (0.7%)	3 (2.0%)	148 (97.4%)	0 (0.0%)	6	1 (16.7%)
atg (Antigua and Barbuda)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
bhr (Bahrain)	56	1 (1.8%)	4 (7.1%)	51 (91.1%)	0 (0.0%)	4	1 (25.0%)
bhs (Bahamas)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
che (Switzerland)	57	1 (1.8%)	17 (29.8%)	39 (68.4%)	0 (0.0%)	21	1 (4.8%)
cze (Czech Republic)	31	1 (3.2%)	1 (3.2%)	29 (93.5%)	0 (0.0%)	11	1 (9.1%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
est (Estonia)	4	1 (25.0%)	2 (50.0%)	1 (25.0%)	0 (0.0%)	2	1 (50.0%)
eth (Ethiopia)	22	1 (4.5%)	0 (0.0%)	21 (95.5%)	0 (0.0%)	1	1 (100.0%)
gin (Guinea)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
jor (Jordan)	5	1 (20.0%)	2 (40.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
kna (Saint Kitts and Nevis)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
kwt (Kuwait)	3	1 (33.3%)	2 (66.7%)	0 (0.0%)	0 (0.0%)	2	1 (50.0%)
lux (Luxembourg)	8	1 (12.5%)	6 (75.0%)	1 (12.5%)	0 (0.0%)	4	1 (25.0%)
mar (Morocco)	111	1 (0.9%)	1 (0.9%)	109 (98.2%)	0 (0.0%)	6	1 (16.7%)
mkd (Macedonia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
pak (Pakistan)	53	1 (1.9%)	3 (5.7%)	49 (92.5%)	0 (0.0%)	8	1 (12.5%)
per (Peru)	8	1 (12.5%)	1 (12.5%)	6 (75.0%)	0 (0.0%)	6	1 (16.7%)
png (Papua New Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
prt (Portugal)	54	1 (1.9%)	13 (24.1%)	39 (72.2%)	1 (1.9%)	9	2 (22.2%)
rwa (Rwanda)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
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%)
aut (Austria)	76	0 (0.0%)	11 (14.5%)	65 (85.5%)	0 (0.0%)	16	0 (0.0%)
aze (Azerbaijan)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	4	0 (0.0%)
bel (Belgium)	22	0 (0.0%)	6 (27.3%)	16 (72.7%)	0 (0.0%)	6	0 (0.0%)
bih (Bosnia and Herzegovina)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	3	0 (0.0%)
blr (Belarus)	31	0 (0.0%)	0 (0.0%)	31 (100.0%)	0 (0.0%)	4	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cmr (Cameroon)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	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)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
dma (Dominica)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	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)	13	0 (0.0%)	10 (76.9%)	3 (23.1%)	0 (0.0%)	4	0 (0.0%)
fji (Fiji)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	2	0 (0.0%)
geo (Georgia)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	2	0 (0.0%)
gha (Ghana)	31	0 (0.0%)	0 (0.0%)	31 (100.0%)	0 (0.0%)	3	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hrv (Croatia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hun (Hungary)	29	0 (0.0%)	11 (37.9%)	18 (62.1%)	0 (0.0%)	9	0 (0.0%)
imn (Isle of Man)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
irl (Ireland)	68	0 (0.0%)	16 (23.5%)	52 (76.5%)	0 (0.0%)	16	0 (0.0%)
irq (Iraq)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	2	0 (0.0%)
isl (Iceland)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
kaz (Kazakhstan)	12	0 (0.0%)	2 (16.7%)	10 (83.3%)	0 (0.0%)	5	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
khm (Cambodia, Kingdom of)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	6	0 (0.0%)
kor (South Korea)	80	0 (0.0%)	40 (50.0%)	40 (50.0%)	0 (0.0%)	11	0 (0.0%)
lby (Libya)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	2	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)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	2	0 (0.0%)
lka (Sri Lanka)	42	0 (0.0%)	4 (9.5%)	38 (90.5%)	0 (0.0%)	3	0 (0.0%)
ltu (Lithuania)	25	0 (0.0%)	2 (8.0%)	23 (92.0%)	0 (0.0%)	5	0 (0.0%)
lva (Latvia)	3	0 (0.0%)	2 (66.7%)	1 (33.3%)	0 (0.0%)	2	0 (0.0%)
mli (Mali)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
mlt (Malta)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
mmr (Myanmar)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	4	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
moz (Mozambique)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mwi (Malawi)	16	0 (0.0%)	3 (18.8%)	13 (81.3%)	0 (0.0%)	3	0 (0.0%)
mys (Malaysia)	6	0 (0.0%)	2 (33.3%)	4 (66.7%)	0 (0.0%)	4	0 (0.0%)
nam (Namibia)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	22	0 (0.0%)	2 (9.1%)	20 (90.9%)	0 (0.0%)	5	0 (0.0%)
nor (Norway)	34	0 (0.0%)	14 (41.2%)	20 (58.8%)	0 (0.0%)	10	0 (0.0%)
nzl (New Zealand)	60	0 (0.0%)	10 (16.7%)	50 (83.3%)	0 (0.0%)	10	0 (0.0%)
omn (Oman)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	2	0 (0.0%)
pri (Puerto Rico)	6	0 (0.0%)	3 (50.0%)	3 (50.0%)	0 (0.0%)	3	0 (0.0%)
pse (Palestinian Territory, Occupied)	34	0 (0.0%)	0 (0.0%)	34 (100.0%)	0 (0.0%)	1	0 (0.0%)
qat (Qatar)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	4	0 (0.0%)
sgp (Singapore)	33	0 (0.0%)	10 (30.3%)	23 (69.7%)	0 (0.0%)	16	0 (0.0%)
som (Somalia)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	6	0 (0.0%)
svk (Slovak Republic)	12	0 (0.0%)	1 (8.3%)	11 (91.7%)	0 (0.0%)	7	0 (0.0%)
svn (Slovenia)	24	0 (0.0%)	1 (4.2%)	23 (95.8%)	0 (0.0%)	7	0 (0.0%)
syc (Seychelles)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
syr (Syria)	15	0 (0.0%)	0 (0.0%)	15 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	4 (57.1%)	2 (28.6%)	1 (14.3%)	2	1 (50.0%)
tto (Trinidad and Tobago)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
uzb (Uzbekistan)	21	0 (0.0%)	0 (0.0%)	21 (100.0%)	0 (0.0%)	4	0 (0.0%)
vut (Vanuatu)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)