IPv4 R&E Routing Table Report 23:00 GMT Sat 21 Mar, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1035823 Prefixes after maximum aggregation (per Origin AS): 398562 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 512091 Number of IPv4 prefixes with a valid ROA: 625138 Number of IPv4 prefixes with an invalid ROA: 493 Number of IPv4 prefixes with no ROA: 410192 Total ASes present in the Internet Routing Table: 78105 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66924 Origin ASes announcing only one prefix: 27271 Transit ASes present in the Internet Routing Table: 11181 Transit-only ASes present in the Internet Routing Table: 585 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1078 Number of instances of unregistered ASNs: 1110 Number of 32-bit ASNs allocated by the RIRs: 49047 Number of 32-bit ASNs visible in the Routing Table: 40138 Prefixes from 32-bit ASNs in the Routing Table: 225356 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 394 Number of addresses announced to Internet: 3107415552 Equivalent to 185 /8s, 55 /16s and 102 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 337654 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281919 Total APNIC prefixes after maximum aggregation: 82018 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 269042 Unique aggregates announced from the APNIC address blocks: 107144 APNIC Region origin ASes present in the Internet Routing Table: 15110 APNIC Prefixes per ASN: 17.81 APNIC Region origin ASes announcing only one prefix: 4601 APNIC Region transit ASes present in the Internet Routing Table: 2045 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10687 Number of APNIC addresses announced to Internet: 751700480 Equivalent to 44 /8s, 206 /16s and 10 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 303670 Total ARIN prefixes after maximum aggregation: 137010 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302318 Unique aggregates announced from the ARIN address blocks: 147090 ARIN Region origin ASes present in the Internet Routing Table: 19392 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7095 ARIN Region transit ASes present in the Internet Routing Table: 1921 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5527 Number of ARIN addresses announced to Internet: 1349265152 Equivalent to 80 /8s, 108 /16s and 39 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-404380 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 285633 Total RIPE prefixes after maximum aggregation: 141215 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288414 Unique aggregates announced from the RIPE address blocks: 187807 RIPE Region origin ASes present in the Internet Routing Table: 29324 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12155 RIPE Region transit ASes present in the Internet Routing Table: 4067 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13170 Number of RIPE addresses announced to Internet: 732493312 Equivalent to 43 /8s, 168 /16s and 246 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 126607 Total LACNIC prefixes after maximum aggregation: 30684 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122300 Unique aggregates announced from the LACNIC address blocks: 50269 LACNIC Region origin ASes present in the Internet Routing Table: 11366 LACNIC Prefixes per ASN: 10.76 LACNIC Region origin ASes announcing only one prefix: 2692 LACNIC Region transit ASes present in the Internet Routing Table: 2564 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9383 Number of LACNIC addresses announced to Internet: 170370560 Equivalent to 10 /8s, 39 /16s and 166 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36916 Total AfriNIC prefixes after maximum aggregation: 6937 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 53355 Unique aggregates announced from the AfriNIC address blocks: 19436 AfriNIC Region origin ASes present in the Internet Routing Table: 2004 AfriNIC Prefixes per ASN: 26.62 AfriNIC Region origin ASes announcing only one prefix: 728 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1371 Number of AfriNIC addresses announced to Internet: 103329280 Equivalent to 6 /8s, 40 /16s and 174 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5940 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4560 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4032 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3478 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3336 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3009 862 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2807 177 541 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14522 41223 5587 AMAZON-02 - Amazon.com, Inc., US 22773 4766 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3711 1321 75 SHAW - Shaw Communications, CA 396982 3293 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3235 8767 854 COGENT-174 - Cogent Communications, LLC, 749 3141 54728 2392 DNIC-AS-00749 - United States Department 36352 2704 222 888 AS-COLOCROSSING - HostPapa, US 16625 2695 1178 2093 AKAMAI-AS - Akamai Technologies, Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7203 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3828 355 2249 M247, RO 20940 3820 3389 110 AKAMAI-ASN1, NL 12389 3149 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2679 194 1962 CDNEXT, GB 34984 2462 366 570 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 203020 1630 247 806 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12825 3302 595 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2458 506 344 Mega Cable, S.A. de C.V., MX 11830 1957 369 65 Instituto Costarricense de Electricidad y 11664 1451 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 26615 1057 2475 94 TIM SA, BR 22884 1055 67 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2045 648 34 RAYA-AS, EG 36992 1843 1531 336 ETISALAT-MISR, EG 24863 1289 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1229 521 44 Vodafone-, EG 37069 1109 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 586 155 217 NTT-DATA-Inc, ZA 15399 555 57 59 WANANCHI-, KE 36914 542 82 3 KENET-AS, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14522 41223 5587 AMAZON-02 - Amazon.com, Inc., US 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12825 3302 595 UNINET, MX 12479 7203 1711 149 UNI2-AS, ES 7545 5940 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4766 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4560 347 25 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13760 13640 CHINAMOBILE-CN China Mobile Communications Grou 8151 12825 12230 UNINET, MX 12479 7203 7054 UNI2-AS, ES 7545 5940 5426 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4560 4535 FPT-AS-AP FPT Telecom Company, VN 9498 4850 4528 BBIL-AP BHARTI Airtel Ltd., IN 22773 4766 4399 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4032 4003 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:95 /12:297 /13:581 /14:1192 /15:2088 /16:13571 /17:8228 /18:13223 /19:25290 /20:45611 /21:52190 /22:113621 /23:107106 /24:652660 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6985 12825 UNINET, MX 12479 6144 7203 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4647 CABLEONE - CABLE ONE, INC., US 6327 3491 3711 SHAW - Shaw Communications, CA 22773 3034 4766 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2607 14522 AMAZON-02 - Amazon.com, Inc., US 30036 2318 2667 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2488 2:1686 3:1005 4:5 5:5224 6:197 7:6 8:1501 9:38 11:172 12:1194 13:659 14:2670 15:459 16:169 17:422 18:919 20:582 21:4 22:188 23:8202 24:2842 25:2 27:2817 28:1 29:19 31:3400 32:36 34:90 35:290 36:4650 37:4470 38:9977 39:1273 40:413 41:4557 42:2202 43:3057 44:444 45:19924 46:4892 47:407 48:99 49:2192 50:2072 51:614 52:1302 54:279 55:1115 56:11 57:315 58:2357 59:1361 60:1174 61:3125 62:3116 63:1748 64:6260 65:2130 66:6007 67:3259 68:1498 69:4218 70:1056 71:614 72:3145 74:3003 75:1495 76:592 77:2886 78:1920 79:1797 80:2342 81:2195 82:4010 83:1444 84:2084 85:3819 86:1103 87:2299 88:1357 89:4702 90:797 91:8417 92:2843 93:3011 94:4313 95:4641 96:1440 97:313 98:947 99:805 100:68 101:1623 102:4464 103:32995 104:5469 105:813 106:925 107:2852 108:1223 109:4202 110:2302 111:4103 112:3156 113:1976 114:2260 115:2286 116:2194 117:3489 118:2996 119:2079 120:2685 121:1542 122:2980 123:2254 124:1692 125:3013 126:125 128:1659 129:955 130:1602 131:2464 132:811 133:463 134:1641 135:596 136:1584 137:1340 138:3165 139:1635 140:1775 141:1638 142:2545 143:2135 144:1753 145:626 146:2195 147:2147 148:2733 149:3055 150:1359 151:2718 152:2305 153:952 154:9480 155:2317 156:4381 157:2275 158:1503 159:2801 160:3830 161:1956 162:4027 163:2435 164:2035 165:2632 166:1303 167:2243 168:3980 169:889 170:5519 171:1109 172:4598 173:3469 174:885 175:1377 176:3835 177:4786 178:4321 179:2291 180:3192 181:4469 182:4018 183:2825 184:2010 185:21815 186:5721 187:4932 188:4566 189:4501 190:9765 191:1556 192:11476 193:9586 194:7864 195:5734 196:3314 197:3328 198:6121 199:6112 200:8072 201:6400 202:10676 203:10639 204:4720 205:3707 206:4470 207:3846 208:4375 209:5405 210:4723 211:2687 212:4984 213:4116 214:1050 215:46 216:7256 217:3542 218:1692 219:420 220:2201 221:1308 222:933 223:3398 End of report