[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Mon Jul 29 20:10:39 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Mon 29 Jul, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 14379
Prefixes after maximum aggregation (per Origin AS): 7489
Deaggregation factor: 1.92
Unique aggregates announced (without unneeded subnets): 8567
Number of IPv4 prefixes with a valid ROA: 4226
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 10146
Total ASes present in the Internet Routing Table: 2074
Prefixes per ASN: 6.93
Origin-only ASes present in the Internet Routing Table: 1808
Origin ASes announcing only one prefix: 781
Transit ASes present in the Internet Routing Table: 266
Transit-only ASes present in the Internet Routing Table: 59
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45047
Number of 32-bit ASNs visible in the Routing Table: 466
Prefixes from 32-bit ASNs in the Routing Table: 1372
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1
Number of addresses announced to Internet: 146926080
Equivalent to 8 /8s, 193 /16s and 234 /24s
Percentage of available address space announced: 4.0
Percentage of allocated address space announced: 4.0
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: 1724
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3817
Total APNIC prefixes after maximum aggregation: 2048
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3818
Unique aggregates announced from the APNIC address blocks: 2424
APNIC Region origin ASes present in the Internet Routing Table: 488
APNIC Prefixes per ASN: 7.82
APNIC Region origin ASes announcing only one prefix: 216
APNIC Region transit ASes present in the Internet Routing Table: 48
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 181
Number of APNIC addresses announced to Internet: 44655104
Equivalent to 2 /8s, 169 /16s and 98 /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, 131072-153913
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: 7431
Total ARIN prefixes after maximum aggregation: 4199
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 7437
Unique aggregates announced from the ARIN address blocks: 4613
ARIN Region origin ASes present in the Internet Routing Table: 1184
ARIN Prefixes per ASN: 6.28
ARIN Region origin ASes announcing only one prefix: 419
ARIN Region transit ASes present in the Internet Routing Table: 149
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 193
Number of ARIN addresses announced to Internet: 83132928
Equivalent to 4 /8s, 244 /16s and 130 /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, 393216-402332
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, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 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: 896
Total RIPE prefixes after maximum aggregation: 627
RIPE Deaggregation factor: 1.43
Prefixes being announced from the RIPE address blocks: 890
Unique aggregates announced from the RIPE address blocks: 670
RIPE Region origin ASes present in the Internet Routing Table: 189
RIPE Prefixes per ASN: 4.71
RIPE Region origin ASes announcing only one prefix: 82
RIPE Region transit ASes present in the Internet Routing Table: 28
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 29
Number of RIPE addresses announced to Internet: 12821760
Equivalent to 0 /8s, 195 /16s and 165 /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,
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: 1163
Total LACNIC prefixes after maximum aggregation: 472
LACNIC Deaggregation factor: 2.46
Prefixes being announced from the LACNIC address blocks: 1162
Unique aggregates announced from the LACNIC address blocks: 677
LACNIC Region origin ASes present in the Internet Routing Table: 128
LACNIC Prefixes per ASN: 9.08
LACNIC Region origin ASes announcing only one prefix: 53
LACNIC Region transit ASes present in the Internet Routing Table: 20
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 54
Number of LACNIC addresses announced to Internet: 4005376
Equivalent to 0 /8s, 61 /16s and 30 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + 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: 1071
Total AfriNIC prefixes after maximum aggregation: 142
AfriNIC Deaggregation factor: 7.54
Prefixes being announced from the AfriNIC address blocks: 1071
Unique aggregates announced from the AfriNIC address blocks: 182
AfriNIC Region origin ASes present in the Internet Routing Table: 25
AfriNIC Prefixes per ASN: 42.84
AfriNIC Region origin ASes announcing only one prefix: 11
AfriNIC Region transit ASes present in the Internet Routing Table: 6
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2310656
Equivalent to 0 /8s, 35 /16s and 66 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 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
2907 591 2162 464 SINET-AS Research Organization of Informa
1237 189 74 144 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Rese
55824 133 19 20 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
2697 58 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 202 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2920 176 34 7 LACOE, US
2152 151 507 97 CENIC-2152, US
18558 140 18 4 NETBLK-RCOEK, US
81 133 517 33 NCREN, US
23024 96 7 21 OCDE, US
21976 87 50 17 NJEDGE-NET, US
237 84 543 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8895 136 24 5 ISU Internet Services Unit ISU, SA
1103 96 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
3267 76 26 66 NIKS, RU
1653 54 151 51 SUNET SUNET Swedish University Network, E
1741 39 149 18 FUNETAS, FI
3218 21 4 18 COSMOS-3218-AS AS-COSMOS root, RU
8674 16 2 11 NETNOD-IX Netnod AB, SE
1880 14 1 7 STUPI, SE
224 13 256 13 UNINETT UNINETT, The Norwegian University
1101 13 481 13 IP-EEND-AS IP-EEND BV, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M
1916 141 176 42 Rede Nacional de Ensino e Pesquisa, BR
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a
61468 45 5 15 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blumena
3596 37 8 4 Universidad Autonoma Metropolitana, MX
1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 524 82 3 KENET-AS, KE
2018 371 319 70 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
327700 41 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 11 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37215 7 8 1 MAREN, MW
37654 6 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 591 2162 464 SINET-AS Research Organization of Informa
36914 524 82 3 KENET-AS, KE
2018 371 319 70 TENET-1, ZA
376 202 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 189 74 144 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
2920 176 34 7 LACOE, US
7575 172 329 115 AARNET-AS-AP Australian Academic and Rese
28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 524 521 KENET-AS, KE
2018 371 301 TENET-1, ZA
5786 198 197 UPRENET, PR
58647 180 178 KAGAWAU-AS Kagawa University, JP
2920 176 169 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 136 131 ISU Internet Services Unit ISU, SA
55824 133 113 NKN-CORE-NW NKN Core Network, IN
81 133 100 NCREN, US
1916 141 99 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 7500 M-ROOT-DNS WIDE Project, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:9
/13:17 /14:26 /15:82 /16:1367 /17:350 /18:385
/19:455 /20:663 /21:573 /22:1012 /23:1079 /24:8358
/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
36914 502 524 KENET-AS, KE
8895 131 136 ISU Internet Services Unit ISU, SA
23024 38 96 OCDE, US
32440 36 62 LONI, US
327700 36 41 MoRENet, MZ
3267 35 76 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 8:2 12:1 14:92 23:4 24:3
35:3 38:10 40:1 41:231 44:4 45:44
47:1 49:10 50:3 52:1 59:18 61:3
62:1 63:33 64:42 65:1 66:37 67:42
68:10 69:19 70:2 71:1 72:7 74:48
76:41 77:8 80:5 81:1 82:4 83:1
84:3 85:17 86:5 87:1 89:2 91:14
92:2 93:1 96:5 97:1 98:2 102:2
103:230 104:77 108:8 109:5 111:16 113:2
114:24 116:8 117:61 118:33 119:1 121:18
122:8 123:8 125:2 128:82 129:29 130:94
131:55 132:67 133:155 134:100 136:197 137:47
138:58 139:5 140:32 141:3 142:25 143:23
144:23 145:1 146:134 147:57 148:187 149:11
150:36 151:7 152:135 153:3 154:29 155:63
156:133 157:21 158:34 159:21 160:30 161:15
162:21 163:58 164:14 165:47 166:1 167:9
168:96 169:6 170:20 171:1 172:3 173:6
175:18 176:8 177:5 179:12 180:15 181:1
182:1 184:2 185:10 186:3 187:18 188:4
189:3 190:17 191:13 192:897 193:35 194:57
195:29 196:144 197:311 198:416 199:236 200:229
201:37 202:539 203:416 204:355 205:131 206:191
207:201 208:68 209:102 210:121 211:14 212:123
213:2 216:62 218:3 219:5 220:17 222:1
End of report
More information about the ren-bgp-stats-all
mailing list