[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sun May 19 20:10:37 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Sun 19 May, 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: 17056
Prefixes after maximum aggregation (per Origin AS): 9793
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 10865
Number of IPv4 prefixes with a valid ROA: 5546
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 11503
Total ASes present in the Internet Routing Table: 2604
Prefixes per ASN: 6.55
Origin-only ASes present in the Internet Routing Table: 2264
Origin ASes announcing only one prefix: 1004
Transit ASes present in the Internet Routing Table: 340
Transit-only ASes present in the Internet Routing Table: 63
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 15
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 4
Number of instances of unregistered ASNs: 4
Number of 32-bit ASNs allocated by the RIRs: 44497
Number of 32-bit ASNs visible in the Routing Table: 615
Prefixes from 32-bit ASNs in the Routing Table: 1725
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: 192122384
Equivalent to 11 /8s, 115 /16s and 142 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 5.2
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: 1954
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3818
Total APNIC prefixes after maximum aggregation: 2057
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3819
Unique aggregates announced from the APNIC address blocks: 2401
APNIC Region origin ASes present in the Internet Routing Table: 507
APNIC Prefixes per ASN: 7.53
APNIC Region origin ASes announcing only one prefix: 223
APNIC Region transit ASes present in the Internet Routing Table: 47
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 200
Number of APNIC addresses announced to Internet: 44641536
Equivalent to 2 /8s, 169 /16s and 45 /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: 7498
Total ARIN prefixes after maximum aggregation: 4201
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 7514
Unique aggregates announced from the ARIN address blocks: 4656
ARIN Region origin ASes present in the Internet Routing Table: 1186
ARIN Prefixes per ASN: 6.34
ARIN Region origin ASes announcing only one prefix: 425
ARIN Region transit ASes present in the Internet Routing Table: 152
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 197
Number of ARIN addresses announced to Internet: 83377920
Equivalent to 4 /8s, 248 /16s and 63 /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: 3540
Total RIPE prefixes after maximum aggregation: 2849
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3528
Unique aggregates announced from the RIPE address blocks: 2901
RIPE Region origin ASes present in the Internet Routing Table: 662
RIPE Prefixes per ASN: 5.33
RIPE Region origin ASes announcing only one prefix: 288
RIPE Region transit ASes present in the Internet Routing Table: 99
Average RIPE Region AS path length visible: 6.3
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 147
Number of RIPE addresses announced to Internet: 57538064
Equivalent to 3 /8s, 109 /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,
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: 1341
Total LACNIC prefixes after maximum aggregation: 536
LACNIC Deaggregation factor: 2.50
Prefixes being announced from the LACNIC address blocks: 1339
Unique aggregates announced from the LACNIC address blocks: 715
LACNIC Region origin ASes present in the Internet Routing Table: 159
LACNIC Prefixes per ASN: 8.42
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 24
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4230144
Equivalent to 0 /8s, 64 /16s and 140 /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: 855
Total AfriNIC prefixes after maximum aggregation: 146
AfriNIC Deaggregation factor: 5.86
Prefixes being announced from the AfriNIC address blocks: 855
Unique aggregates announced from the AfriNIC address blocks: 191
AfriNIC Region origin ASes present in the Internet Routing Table: 25
AfriNIC Prefixes per ASN: 34.20
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: 3.7
Max AfriNIC Region AS path length visible: 7
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 2334464
Equivalent to 0 /8s, 35 /16s and 159 /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 Infor
1237 189 74 142 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Re
55824 131 19 18 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Rese
9411 82 16 2 NONTRINET-AS-AP Kasetsart University, T
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 70 37 10 UNINET-AS-AP UNINET-, TH
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
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
376 203 162 152 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2920 177 34 7 LACOE, US
2152 150 507 94 CSUNET-NW, US
18558 140 18 4 NETBLK-RCOEK, US
81 133 517 33 NCREN, US
23024 108 7 22 OCDE, US
237 86 543 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
21976 79 51 18 NJEDGE-NET, 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
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
786 186 1767 183 JANET Jisc Services Limited, GB
8895 132 24 5 ISU Internet Services Unit ISU, SA
559 113 533 103 SWITCH Peering requests: peering at switch
1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 75 27 65 RUNNET, RU
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,
1916 139 176 42 Rede Nacional de Ensino e Pesquisa, BR
11340 108 25 52 Red Universitaria Nacional, CL
271640 65 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 49 16 2 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
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
2018 379 319 71 TENET-1, ZA
36914 250 82 3 KENET-AS, KE
327700 48 16 1 MoRENet, MZ
8094 47 48 18 PUKNET, ZA
37215 36 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37182 14 11 3 TERNET, TZ
37654 14 1 8 RwEdNet-AS, RW
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
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 Infor
2018 379 319 71 TENET-1, ZA
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
36914 250 82 3 KENET-AS, KE
376 203 162 152 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 189 74 142 KREONET-AS-KR KISTI, KR
786 186 1767 183 JANET Jisc Services Limited, GB
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
2920 177 34 7 LACOE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 379 308 TENET-1, ZA
36914 250 247 KENET-AS, KE
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 177 170 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 132 127 ISU Internet Services Unit ISU, SA
55824 131 113 NKN-CORE-NW NKN Core Network, IN
81 133 100 NCREN, US
1916 139 97 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
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US
18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, 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 /12:10
/13:18 /14:31 /15:116 /16:1907 /17:409 /18:432
/19:530 /20:783 /21:770 /22:1375 /23:1343 /24:9321
/25:6 /26:1 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 237 250 KENET-AS, KE
8895 127 132 ISU Internet Services Unit ISU, SA
23024 51 108 OCDE, US
327700 42 48 MoRENet, MZ
32440 38 64 LONI, US
3267 33 75 RUNNET, RU
200521 33 56 SEAP-AGE, ES
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:1 14:92 23:4
24:3 31:1 35:3 38:10 40:1 41:201
44:5 45:37 46:5 47:1 49:9 50:3
52:1 59:18 61:3 62:7 63:32 64:42
65:1 66:49 67:41 68:10 69:18 70:2
71:1 72:7 74:51 76:41 77:11 78:3
79:10 80:12 81:26 82:7 83:7 84:8
85:41 86:5 87:1 89:11 91:50 92:2
93:5 94:2 95:2 96:5 97:1 98:2
102:1 103:259 104:76 108:8 109:6 114:24
116:8 117:61 118:32 119:1 121:2 122:8
123:8 125:2 128:89 129:39 130:85 131:61
132:66 133:157 134:103 136:197 137:50 138:57
139:5 140:34 141:3 142:26 143:24 144:23
145:2 146:134 147:60 148:193 149:11 150:38
151:9 152:136 153:14 154:32 155:63 156:135
157:17 158:34 159:22 160:30 161:17 162:19
163:57 164:14 165:48 166:1 167:9 168:121
169:6 170:92 171:1 172:3 173:6 175:18
176:8 177:6 179:9 180:14 181:1 182:1
184:1 185:48 186:3 187:17 188:13 189:3
190:17 191:13 192:1292 193:263 194:141 195:74
196:153 197:116 198:419 199:235 200:253 201:37
202:517 203:405 204:353 205:130 206:191 207:202
208:72 209:108 210:112 211:14 212:161 213:5
216:92 217:9 218:3 219:5 220:17 222:1
End of report
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